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Thermodynamic process with no change in enthalpy
An isenthalpic process or isoenthalpic process is a process that proceeds without any change in enthalpy, H; or specific enthalpy, h. If a steady-state
Isenthalpic_process
Thermodynamic process that is reversible and adiabatic
Thermodynamic processes are named based on the effect they would have on the system (ex. isovolumetric/isochoric: constant volume, isenthalpic: constant enthalpy)
Isentropic_process
Series of activities
system Adiabatic process, which proceeds without transfer of heat or matter between a system and its surroundings Isenthalpic process, in which enthalpy
Process
Equation of the state of a hypothetical ideal gas
15, depending on constitution gases and temperature. ^ b. In an isenthalpic process, system enthalpy (H) is constant. In the case of free expansion for
Ideal_gas_law
Passage of a system from an initial to a final state of thermodynamic equilibrium
during a process. For example: An isenthalpic process introduces no change in enthalpy in the system. A polytropic process is a thermodynamic process that
Thermodynamic_process
Thermodynamic process in which pressure remains constant
meaning "weight." Adiabatic process Cyclic process Isochoric process Isothermal process Polytropic process Isenthalpic process "First Law of Thermodynamics"
Isobaric_process
Thermodynamic process in which no mass or heat is exchanged with surroundings
An adiabatic process (adiabatic from Ancient Greek ἀδιάβατος (adiábatos) 'impassable') is a type of thermodynamic process whereby a transfer of energy
Adiabatic_process
Phenomenon of non-ideal fluids changing temperature
H/\partial P)_{T}\neq 0} . Critical point (thermodynamics) Enthalpy and Isenthalpic process Ideal gas Liquefaction of gases MIRI (Mid-Infrared Instrument), a
Joule–Thomson_effect
Chart describing internal energy of thermodynamic systems
the diagram represents an isenthalpic process. A vertical line in the h–s chart represents an isentropic process. The process 3–4 in a Rankine cycle is
Enthalpy–entropy_chart
Physics of heat, work, and temperature
are: Adiabatic process: occurs without loss or gain of energy by heat Isenthalpic process: occurs at a constant enthalpy Isentropic process: a reversible
Thermodynamics
Measure of energy in a thermodynamic system
quantity. Calorimetry Calorimeter Departure function Hess's law Isenthalpic process Laws of thermodynamics Stagnation enthalpy Standard enthalpy of formation
Enthalpy
Thermodynamic process
thermodynamics, a quasi-static process, also known as a quasi-equilibrium process (from Latin quasi, meaning ‘as if’), is a thermodynamic process that happens slowly
Quasistatic_process
Thermodynamic process in which temperature remains constant
An isothermal process is a type of thermodynamic process in which the temperature T of a system remains constant: ΔT = 0. This typically occurs when a
Isothermal_process
Device that cools air through the evaporation of water
This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling
Evaporative_cooler
Process that cannot be undone or reversed
In thermodynamics, an irreversible process is a process impossible to reverse or undo. All complex natural processes are irreversible, although a phase
Irreversible_process
Partial vapor due to reduction in pressure
(BLEVE). The flash evaporation of a single-component liquid is an isenthalpic process and is often referred to as an adiabatic flash. The following equation
Flash_evaporation
Thermodynamic process
A polytropic process is a thermodynamic process that obeys the relation: p V n = C {\displaystyle pV^{n}=C} where p is the pressure, V is volume, n is
Polytropic_process
Linked cyclic series of thermodynamic processes
and reversible. Isenthalpic : The process that proceeds without any change in enthalpy or specific enthalpy. Polytropic : The process that obeys the relation
Thermodynamic_cycle
Type of turbine for high-pressure gas
62 bar to 21 bar (6.2 to 2.1 MPa), which is an isenthalpic process (i.e., a constant-enthalpy process) that results in lowering the temperature of the
Turboexpander
Thermodynamic process of a closed system in which volume remains constant
an isochoric process, also called a constant-volume process, an isovolumetric process, or an isometric process, is a thermodynamic process during which
Isochoric_process
External combustion engine using air as the working fluid
isentropic process, reversible adiabatic process (no heat is added or removed from the working fluid - and the entropy is constant) isenthalpic process (the
Hot_air_engine
Topics referred to by the same term
device for controlling aircraft engines Throttling process (thermodynamics), an isenthalpic process in thermodynamics CPU throttling, computer hardware
Throttle_(disambiguation)
Power plant component
feedwater) must then be throttled to the condenser pressure, an isenthalpic process that results in some entropy gain with a slight penalty on overall
Feedwater_heater
Thermodynamic cycle for spark ignition piston engines
and isentropic processes (frictionless, adiabatic reversible). Left and right sides of the loop: a pair of parallel isochoric processes (constant volume)
Otto_cycle
Physical law for entropy and heat
and provides necessary criteria for spontaneous processes. For example, the first law allows the process of a cup falling off a table and breaking on the
Second_law_of_thermodynamics
the air at supercritical pressures. Final liquefaction takes place by isenthalpic expansion in a thermal expansion valve. Air Liquide Air Products & Chemicals
Liquefaction_of_gases
Thermodynamic quantity
path of a process through the equilibrium state space of a thermodynamic system is termed a process function, or, alternatively, a process quantity, or
Process_function
Chemical process in the liquefaction of gas
The Hampson–Linde cycle is a process for the liquefaction of gases, especially for air separation. William Hampson and Carl von Linde independently filed
Hampson–Linde_cycle
Law of thermodynamics establishing the conservation of energy
conservation of energy in the context of thermodynamic processes. For a thermodynamic process affecting a thermodynamic system without transfer of matter
First_law_of_thermodynamics
Type of energy transfer
modes of transfer in order to ensure a strict logical distinction. In the process of transfer, heat is not necessarily conserved, but can be generated (though
Heat
Observational basis of thermodynamics
thermodynamic equilibrium. The laws also use various parameters for thermodynamic processes, such as thermodynamic work and heat, and establish relationships between
Laws_of_thermodynamics
Process whose direction can be reversed
In thermodynamics, a reversible process is a process, involving a system and its surroundings, whose direction can be reversed by infinitesimal changes
Reversible process (thermodynamics)
Reversible_process_(thermodynamics)
Property of a thermodynamic system
concentrated. A consequence of the second law of thermodynamics is that certain processes are irreversible. The thermodynamic concept was referred to by Scottish
Entropy
Physical property of matter
as the definition of the isobaric heat capacity. A system undergoing a process at constant volume implies that no expansion work is done, so the heat
Heat_capacity
Mathematical model which approximates the behavior of real gases
in a throttling process the temperature of the gas does not change. (If the pressure of a real gas is reduced in a throttling process, its temperature
Ideal_gas
Properties independent of system size, and proportional to system size
not conserved in a thermodynamic process of transfer between a system and its surroundings. In a thermodynamic process in which a quantity of energy is
Intensive and extensive properties
Intensive_and_extensive_properties
Body of matter in a state of internal equilibrium
systems can be passive and active according to internal processes. According to internal processes, passive systems and active systems are distinguished:
Thermodynamic_system
Thermodynamic potential
Helmholtz energy during a process is equal to the maximum amount of work that the system can perform in a thermodynamic process in which temperature is
Helmholtz_free_energy
State function whose change relates to the system's maximal work output
work that the system can perform in a process at constant temperature, and its sign indicates whether the process is thermodynamically favorable or forbidden
Thermodynamic_free_energy
Markovich Khalatnikov Isaak Pomeranchuk Isabella Karle Isenthalpic process Isentropic process Ishfaq Ahmad Ishrat Hussain Usmani Isidor Isaac Rabi Isidor
Index_of_physics_articles_(I)
Thermodynamic cycle
this occurs, all available energy has been obtained from the combustion process. For any given portion of air, the greater expansion ratio converts more
Atkinson_cycle
Concept in general relativity and quantum field theory
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Black_hole_thermodynamics
Thermodynamic cycle
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Miller_cycle
Idealized thermodynamic cycle
temperature is constant (isothermal process). Heat transfer from point 4 to 1 and point 2 to 3 are equal to zero (adiabatic process). A Carnot cycle plotted on
Carnot_cycle
Thermodynamic quantity
ratio is important for its applications in thermodynamical reversible processes, especially involving ideal gases; the speed of sound depends on this
Heat_capacity_ratio
Volume of fluid which passes per unit time
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Volumetric_flow_rate
Thermodynamic cycle for combustion engines
of heat at constant volume. Process 3-4: Addition of heat at constant pressure. Process 4-5: Isentropic expansion. Process 5-1: Rejection of heat at constant
Mixed/dual_cycle
Diagram showing the thermodynamic states of a material
this process due to the free floating piston being allowed to rise making the process an isobaric process or constant pressure process. This Process Path
Thermodynamic_diagrams
Closed thermodynamic cycle involving fluid
heat injection process in the cycle. Along adiabatic and isentropic processes, such as those theoretically associated with pumping processes in transcritical
Transcritical_cycle
Parameter used to calculate the volume change of a fluid or solid in response to pressure
system the magnitude of the compressibility depends strongly on whether the process is isentropic or isothermal. Accordingly, isothermal compressibility is
Compressibility
Graph relating temperature and entropy during a thermodynamic process or cycle
during a process. For reversible (ideal) processes, the area under the T–s curve of a process is the heat transferred to the system during that process. Working
Temperature–entropy_diagram
Model that is used to predict the performance of steam turbine systems
The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam
Rankine_cycle
Type of energy transfer
Thermodynamic work is one of the principal kinds of process by which a thermodynamic system can interact with and transfer energy to its surroundings
Work_(thermodynamics)
Refrigeration process
than half of the liquid flashes). The adiabatic flash evaporation process is isenthalpic (occurs at constant enthalpy). Between points 5 and 1, the cold
Vapor-compression refrigeration
Vapor-compression_refrigeration
Physical law for definition of temperature
the labeling may be quite arbitrary, temperature is just such a labeling process which uses the real number system for tagging. The zeroth law justifies
Zeroth_law_of_thermodynamics
Engine combustion process
The Diesel cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression
Diesel_cycle
State of thermodynamic systems where no net flow of matter or energy occurs
natural process proceeds at a finite rate for the main part of its course. It is thereby radically different from a fictive quasi-static 'process' that
Thermodynamic_equilibrium
Thermodynamic cycle
compressor. isobaric process – heat rejection (in the atmosphere). Actual Brayton cycle: adiabatic process – compression isobaric process – heat addition adiabatic
Brayton_cycle
Initial step in the phase transition or molecular self-assembly of a substance
within a substance or mixture. Nucleation is typically defined as the process that determines how long an observer must wait before a new phase or self-organised
Nucleation
Heat required to raise the temperature of a given unit of mass of a substance
polytropic process. {\displaystyle C_{i,m}=\left({\frac {\partial C}{\partial n}}\right)={\text{molar heat capacity at polytropic process.}}} The most
Specific_heat_capacity
Physical quantity
constantly take in and release energy. The Earth's climate and ecosystems processes are driven primarily by radiant energy from the Sun. The total energy
Energy
magnetic flux density. So the first law of thermodynamics in a reversible process can be expressed as Δ U = ∫ S T d S − ∫ V P d V + 1 4 π ∫ V H ⋅ Δ B d V
Magnetic Thermodynamic Systems
Magnetic_Thermodynamic_Systems
Force distributed over an area
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Pressure
German physicist and physiologist (1821–1894)
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Hermann_von_Helmholtz
Version of the second law of thermodynamics
instant in time. The closed integral is carried out along a thermodynamic process path from the initial/final state to the same initial/final state (thermodynamic
Clausius_theorem
Mathematical models of heat pumps and refrigeration
Carnot cycle, which has a quantum equivalent, is reversible so the four processes that comprise it, two isothermal and two isentropic, can also be reversed
Heat pump and refrigeration cycle
Heat_pump_and_refrigeration_cycle
Branch of thermodynamics
equilibrium. Non-equilibrium thermodynamics is concerned with transport processes and with the rates of chemical reactions. Almost all systems found in
Non-equilibrium thermodynamics
Non-equilibrium_thermodynamics
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Internal_pressure
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Theorem of corresponding states
Theorem_of_corresponding_states
steam engines using caloric theory; he develops the notion of a reversible process and, in postulating that no such thing exists in nature, lays the foundation
Timeline_of_thermodynamics
Imaginary volume through which a substance's flow is modeled and analyzed
a mathematical abstraction employed in the process of creating mathematical models of physical processes. In an inertial frame of reference, it is a
Control_volume
Refrigeration process
means it must absorb energy. If melted adiabatically (and therefore isenthalpically), it will increase its energy so that it can become a liquid by stealing
Ionocaloric_refrigeration
Reacting chemical mixture in which the concentrations change periodically
suddenly changing to a very dark blue. This slowly fades to colorless and the process repeats, about ten times in the most popular formulation. The Bray–Liebhafsky
Chemical_oscillator
Performance measure of a device that uses thermal energy
by the second law of thermodynamics it cannot be equal in a non-ideal process, so 0 ≤ η t h < 1 {\displaystyle 0\leq \eta _{\rm {th}}<1} When expressed
Thermal_efficiency
Unsteady state combustion process
Pressure gain combustion (PGC) is the unsteady state process used in gas turbines in which gas expansion caused by heat release is constrained. First
Pressure_gain_combustion
Function describing equilibrium states of a system
expressed by exact differentials. In contrast, mechanical work and heat are process quantities or path functions because their values depend on a specific
State_function
Thermodynamic process
The Kalina cycle, developed by Alexander Kalina, is a thermodynamic process for converting thermal energy into usable mechanical power. It uses a solution
Kalina_cycle
Relations between flows and forces, or gradients, in thermodynamic systems
collected and analyzed by D. G. Miller for many classes of irreversible processes, namely for thermoelectricity, electrokinetics, transference in electrolytic
Onsager_reciprocal_relations
Absorption refrigerator invented in 1930
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Einstein_refrigerator
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Material properties (thermodynamics)
Material_properties_(thermodynamics)
Thermodynamic cycle that includes the basic Stirling engine
heat-rejection processes is the Stirling cycle, which is an altered version of the Carnot cycle in which the two isentropic processes featured in the
Stirling_cycle
Non-hypothetical gases whose molecules occupy space and have interactions
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Real_gas
System that converts heat or thermal energy to mechanical work
the colder sink until it reaches a lower temperature state. During this process some of the thermal energy is converted into work by exploiting the properties
Heat_engine
Mass fraction of a saturated mixture which is vapor
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Vapor_quality
Statistical mechanics of quantum-mechanical systems
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Quantum_statistical_mechanics
Energy contained within a system
formulation of the first law of thermodynamics. Without a thermodynamic process, the internal energy of an isolated system does not change, as expressed
Internal_energy
Technique to cool gases
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Kleemenko_cycle
Idealized thermodynamic cycle used in engines
commercially produced internal combustion engine. The absence of any compression process in the design leads to lower thermal efficiency than the more well known
Lenoir_cycle
Specific mathematical differential form
the system, resulting in changes to the system's internal energy. In a process, the energy input to start a fire may comprise both work and heat, such
Inexact_differential
d S = δ Q T {\displaystyle dS={\frac {\delta Q}{T}}} , for reversible processes only Below are useful results from the Maxwell–Boltzmann distribution
Table of thermodynamic equations
Table_of_thermodynamic_equations
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Pseudo_Stirling_cycle
Gas cooling and liquefaction technique
cylinder (stage 4 of the Siemens cycle) becomes more difficult. Adiabatic process Gas compressor Hampson–Linde cycle Regenerative cooling Timeline of low-temperature
Siemens_cycle
Field of scientific study
equilibrium state to another; such a change is called a thermodynamic process. Ruppeiner geometry is a type of information geometry used to study thermodynamics
Equilibrium_thermodynamics
Model of fluid flow
has applicability as upper boundary to Fanno flow. Fanno flow Isentropic process Rayleigh flow Shapiro, A.H., The Dynamics and Thermodynamics of Compressible
Isothermal_flow
Law of physics
associated with any condensed system undergoing a reversible isothermal process approaches zero as the temperature at which it is performed approaches
Third_law_of_thermodynamics
Type of thermodynamic potential
temperature and pressure. It also provides a necessary condition for processes such as chemical reactions that may occur under these conditions. The
Gibbs_free_energy
Equations in thermodynamics
quantities and physical properties measured in a laboratory or production process. Thermodynamics is based on a fundamental set of postulates, that became
Thermodynamic_equations
Quantifiable conditions of a thermodynamic system at a specific time
a thermodynamic process; usually this is transfer of matter or energy between system and surroundings. In any thermodynamic process, whatever may be
Thermodynamic_state
Thermodynamic phase transition energy
absorbed, by a body or a thermodynamic system, during a constant-temperature process—usually a first-order phase transition, like melting or condensation. Latent
Latent_heat
Device using sound waves to reduce heat
Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility
Pulse_tube_refrigerator
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
Surname or Lastname
English
English : topographic name for someone who lived near a stone cross set up by the roadside or in a marketplace, from Old Norse kross (via Gaelic from Latin crux, genitive crucis), which in Middle English quickly and comprehensively displaced the Old English form crūc (see Crouch). In a few cases the surname may have been given originally to someone who lived by a crossroads, but this sense of the word seems to have been a comparatively late development. In other cases, the surname (and its European cognates) may have denoted someone who carried the cross in processions of the Christian Church, but in English at least the usual word for this sense was Crozier.Irish : reduced form of McCrossen.In North America this name has absorbed examples of cognate names from other languages, such as French Lacroix.
Surname or Lastname
English
English : occupational name for a winder of wool, from an agent derivative of Middle English winde(n) ‘to wind’ (Old English windan ‘to go’, ‘to proceed’). The verb was also used in the Middle Ages of various weaving and plaiting processes, so that in some cases the name may have referred to a basket or hurdle maker.English : habitational name from any of the various minor places in northern England so called, from Old English vindr ‘wind’ + erg ‘hut’, ‘shelter’, i.e. a shelter against the wind.English : John Winder is recorded in Somerset Co., MD, in 1665. William Henry Winder, born in the county in 1775, was blamed for the military defeat that led to the British burning of Washington, DC, in 1814; his son John Henry Winder (b. 1800) was a confederate general who was commander of southern military prisons.
Surname or Lastname
English
English : nickname from Old French certeyn ‘self-assured’, ‘determined’. (The phonetic change of -er- to -ar- was a normal process in Middle English).
Surname or Lastname
English and Scottish
English and Scottish : occupational name for an archer, Middle English bow(e)man, bouman (from Old English boga ‘bow’ + mann ‘man’). This word was distinguished from Bowyer, which denoted a maker or seller of the articles. It is possible that in some cases the surname referred originally to someone who untangled wool with a bow. This process, which originated in Italy, became quite common in England in the 13th century. The vibrating string of a bow was worked into a pile of tangled wool, where its rapid vibrations separated the fibers, while still leaving them sufficiently entwined to produce a fine, soft yarn when spun.Americanized form of German Baumann (see Bauer) or the Dutch cognate Bouman.
Surname or Lastname
English and French
English and French : occupational name for one who carried a cross or a bishop’s crook in ecclesiastical processions, from Middle English, Old French croisier.
Surname or Lastname
English (chiefly West Midlands)
English (chiefly West Midlands) : metonymic occupational name for a fuller, from Middle English tred(en) ‘to tread’ + well ‘well’. Fulling was the process by which newly woven cloth was cleaned and shrunk by the use of heat, water, and pressure (from treading) before finally being stretched and laid out to dry on tenter hooks.
Surname or Lastname
English (chiefly southwestern England and South Wales)
English (chiefly southwestern England and South Wales) : occupational name for a fuller, from an agent derivative of Middle English tuck(en) ‘to full cloth’ (Old English tūcian ‘to torment’). This was the term used for the process in the Middle Ages in southwestern England, and the surname is more common there than elsewhere. Compare Fuller and Walker.Americanized form of Jewish To(c)ker (see Tokarz).Irish : Anglicized form of Gaelic Ó Tuachair ‘descendant of Tuachar’, a personal name composed of the elements tuath ‘people’ + car ‘dear’, ‘beloved’.Possibly also an Americanized form of German Tucher, from an occupational name for a cloth maker or merchant, from an agent derivative of Middle High German tuoch ‘cloth’.
Surname or Lastname
English and Dutch
English and Dutch : occupational name for a tanner of skins, Middle English tanner, Middle Dutch taenre. (The Middle English form derives from Old English tannere, from Late Latin tannarius, reinforced by Old French taneor, from Late Latin tannator; both Late Latin forms derive from a verb tannare, possibly from a Celtic word for the oak, whose bark was used in the process.)Swiss and German : habitational name for someone from any of several places called Tanne (in the Harz Mountains and Silesia) or Tann (southern Germany).Finnish : topographic or ornamental name from Finnish tanner ‘open field’.
Surname or Lastname
French
French : from Old Norman French cardon ‘thistle’ (a diminutive of carde, from Latin carduus), hence a topographic name for someone who lived on land overgrown with thistles, an occupational name for someone who carded wool (originally a process carried out with thistles and teasels), or perhaps a nickname for a prickly and unapproachable person.French : possibly from a reduced form of the personal name Ricardon, a pet form of Richard.English : variant spelling of Carden, cognate with 1.
Surname or Lastname
English, Scottish, Dutch, and North German
English, Scottish, Dutch, and North German : status name for a champion, Middle English and Middle Low German kempe. In the Middle Ages a champion was a professional fighter on behalf of others; for example the King’s Champion, at the coronation, had the duty of issuing a general challenge to battle to anyone who denied the king’s right to the throne. The Middle English word corresponds to Old English cempa and Old Norse kempa ‘warrior’; both these go back to Germanic campo ‘warrior’, which is the source of the Dutch and North German name, corresponding to High German Kampf.Dutch : metonymic occupational name for someone who grew or processed hemp, from Middle Dutch canep ‘hemp’.
Surname or Lastname
English
English : from an agent derivative of Middle English wasch(en) ‘to wash’ (Old English wæscan), hence an occupational name for a laundryman, or for someone who washed raw wool before spinning. Various other occupations, too, involved washing processes and the name may relate to any of these. For example, it may have denoted a man who washed sheep; some tenants on the manor of Burpham, near Worthing, in Sussex (where the surname is found from an early date), had as part of their feudal service to wash the flocks of their master.Americanized spelling of the German cognate Wascher.
Surname or Lastname
English
English : metonymic occupational name for a keeper of a lodging house, from late Old English herebeorg ‘shelter’, ‘lodging’ (from here ‘army’ + beorg ‘shelter’). (The change of -er- to -ar- is a regular phonetic process in Old French and Middle English.)Variant of French Arbour.A Harbour or Arbour, from Normandy, France, is documented in Quebec City in 1671.
Surname or Lastname
English
English : of uncertain origin. It is argued by Redmonds that this surname may have developed as a variant of Stringfellow, through a process, attested in various parish records, in which the original name is first shortened and then expanded into a form different from the original; thus Stringfellow becomes Stringfell, which becomes reinterpreted as Stringfield.
Surname or Lastname
English
English : from Middle English crouch, Old English crūc ‘cross’ (a word that was replaced in Middle English by the word cross, from Old Norse kross), applied either as a topographic name for someone who lived by a cross or possibly as a nickname for someone who had carried a cross in a pageant or procession.Dutch : from Middle Dutch croech ‘jug’, ‘pitcher’, hence a metonymic occupational name for a potter.
Surname or Lastname
English
English : occupational name for a medieval court official, from Middle English bedele (Old English bydel, reinforced by Old French bedel). The word is of Germanic origin, and akin to Old English bēodan ‘to command’ and Old High German bodo ‘messenger’. In the Middle Ages a beadle in England and France was a junior official of a court of justice, responsible for acting as an usher in a court, carrying the mace in processions in front of a justice, delivering official notices, making proclamations (as a sort of town crier), and so on. By Shakespeare’s day a beadle was a sort of village constable, appointed by the parish to keep order.
Surname or Lastname
English and Jewish (Ashkenazic)
English and Jewish (Ashkenazic) : occupational name for a flax grower or dealer or for someone who processed it for weaving (see Flax).Probably a respelling of German Flachsmann, of the same meaning as 1, from Middle High German vlahs ‘flax’ + man ‘man’.
Surname or Lastname
English
English : occupational name for a maker of wheels (for vehicles or for use in spinning or various other manufacturing processes), from an agent derivative of Middle English whele ‘wheel’. The name is particularly common on the Isle of Wight; on the mainland it is concentrated in the neighboring region of central southern England.A founder of Salisbury, NH, in 1634 was John Wheeler.
Surname or Lastname
English
English : from the Norman personal name Bernier.English : from Old English beornan ‘to burn’, hence an occupational name for a burner of lime (compare German Kalkbrenner) or charcoal. It may also have denoted someone who baked bricks or distilled spirits, or who carried out any other manufacturing process involving burning.English : occupational name for a keeper of hounds, from Old Norman French bern(i)er, brenier (a derivative of bren, bran ‘bran’, on which the dogs were fed).Southern English : topographic or occupational name for someone who lived by or worked in a barn, from Middle English bern, barn ‘barn’ + the suffix -er. Compare Barnes.German : habitational name, in Silesia denoting someone from a place called Berna (of which there are two examples); in southern Germany and Switzerland denoting someone from the Swiss city of Berne.German : from the Germanic personal name Bernher meaning ‘lord of the army’.North German : occupational name for a lime or charcoal burner (cognate with 2), from an agent derivative of Middle High German brennen ‘to burn’.
Surname or Lastname
English and Scottish
English and Scottish : metonymic occupational name for a harpist (see Harper), or occasionally a habitational name for someone living at a house distinguished by the sign of a harp.English : habitational name from a minor place such as Harp House in Eastwood, Essex, or South Harp in South Petherton, Somerset, denoting a place where salt was produced, from Old English hearpe ‘harp’, an implement used in the processing of salt. Compare Harpham.German : metonymic occupational name for a harpist, from Middle High German harpfe ‘harp’.German : variant of Harpe.
Surname or Lastname
English (chiefly Devon)
English (chiefly Devon) : occupational name for a soapmaker, from an agent derivative of Middle English sÅpe ‘soap’ (apparently of Celtic origin). The process involved boiling oil or fat together with potash or soda.
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
Male
English
Short form of Middle English Wilfred, WILF means "desires peace."
Girl/Female
Hindu
Beauty and intelligent (Wife of yayat)
Girl/Female
English
Peaceful; Nice; Loving; Pretty
Boy/Male
Biblical
He that anoints.
Female
Italian
 Italian form of Latin Cælia, probably CELIA means "heaven." Compare with another form of Celia.
Girl/Female
Muslim/Islamic
Island
Surname or Lastname
English
English : topographic name for someone living in a hollow, from Middle English hole ‘hollow’.German and Dutch : topographic name for someone living in a hollow or a wooded ravine, from Middle High German, Middle Low German hol (see Holl 1).German and Danish : variant of Holder 1.
Surname or Lastname
English
English : unexplained; most probably a derivative of an unidentified Old English personal name.
Boy/Male
Tamil
Light
Girl/Female
Indian
Goddess Laxmi
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
ISENTHALPIC PROCESS
n.
A service book relating to ecclesiastical processions.
n.
A manual of processions; a processional.
n.
An officer appointed to procession lands.
n.
A hymn, or other selection, sung during a church procession; as, the processional was the 202d hymn.
n.
A series of actions, motions, or occurrences; progressive act or transaction; continuous operation; normal or actual course or procedure; regular proceeding; as, the process of vegetation or decomposition; a chemical process; processes of nature.
a.
Pertaining to a procession; consisting in processions; as, processionary service.
n.
One who goes or marches in a procession.
n.
One who takes part in a procession.
a.
Of or pertaining to a procession; consisting in a procession.
n.
An old term for litanies which were said in procession and not kneeling.
v. i.
To march in procession.
n.
The act or process of waning, or decreasing.
n.
That which is moving onward in an orderly, stately, or solemn manner; a train of persons advancing in order; a ceremonious train; a retinue; as, a procession of mourners; the Lord Mayor's procession.
n.
The act or process of making vulgar, or common.
v. t.
To subject, as cloth or yarn, to the fulling process; to full.
v. i.
To honor with a procession.
n.
A sharp or uneven edge on a board that is cut from a log not perfectly squared, or that is made in the process of squaring. See Wany, a.
n.
A proceeding prescribed by statute for ascertaining and fixing the boundaries of land. See 2d Procession.