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Liquid dispenser
A foam pump, or squeeze foamer and dispensing device is a non-aerosol way of dispensing liquid materials. The foam pump outputs the liquid in the form
Foam_pump
Device that dispenses soap
comes in liquid, powder or foam form. When soap is dispensed in liquid form, it is generally in a squeeze bottle or pump. The most popular soap dispensers
Soap_dispenser
source, a centrifugal pump, foam concentrate tanks, a direct-injection foam proportioning system on the discharge side of the pump, a mixing chamber or
Compressed_air_foam_system
Chemical additive that reduces and hinders the formation of foam in liquids
together form foam. Mechanical factors that may generate entrapped air: Leaky seals on pumps High pressure pumps Poor system design (tank, pump inlet, outlet
Defoamer
Large soft mat for lying on to sleep
high-profile, 15″ tall hybrids that contain several types of foam, pillow tops, and digital pumps with memory for individual pressure settings. Studies suggest
Mattress
Firefighting equipment
fire suppression systems such as fire sprinklers, standpipes, and foam systems. Fire pumps are also a critical component integrated into fire trucks and fire
Fire_pump
Water treatment technology
A protein skimmer or foam fractionator is a device used to remove organic compounds such as food and waste particles from water. It is most commonly used
Protein_skimmer
Toy gun
A foam dart blaster, or simply blaster, is a toy gun that shoots foam darts. The term is often treated synonymously with Nerf Blaster, as Nerf was the
Foam_dart_blaster
Fire at refinery in Philadelphia, Pennsylvania
operation. Philadelphia's two foam pumpers, Engines 160 and 133, along with the Gulf Refinery's foam pumper, continued to apply foam to the burning tank, piping
1975 Philadelphia Gulf refinery fire
1975_Philadelphia_Gulf_refinery_fire
Type of positive displacement pump
diaphragm pump design avoids mechanical or chemical damages to the fluid during the transfer: No shear, no foam and no heating. Pump design separates pump fluids
Diaphragm_pump
Emergency services organisation in Singapore
approximately 15m2. The Pump Ladder (PL) is the workhorse fire engine of the SCDF. It carries 2,400 litres of water and 1,200 litres of foam, along with other
Singapore_Civil_Defence_Force
Finely textured milk used in coffee drinks
machine, which pumps steam into a pitcher of milk. The opposite of microfoam is Macrofoam (also called dry foam, in contrast to the wet foam of microfoam)
Microfoam
synthetic-enzyme based foaming agents; foam stability enhancing admixtures; and specialized foam generating, mixing, and pumping equipment has improved
Foam_concrete
Type of strong coffee
ml, and its distinctive layers: a dark body topped with a lighter-colored foam called "crema". Espresso machines use pressure to extract a highly concentrated
Espresso
carry a multitude of equipment and firefighting media (such as water and foam) to deal with different types of emergencies ranging from fires, rescues
Fire appliances in the United Kingdom
Fire_appliances_in_the_United_Kingdom
Porous material made from a metal
pores can be sealed (closed-cell foam) or interconnected (open-cell foam). The defining characteristic of metal foams is a high porosity: typically only
Metal_foam
Polymer composed of a chain of organic units joined by carbamate (urethane) links
and flexible foams, and coatings, adhesives, electrical potting compounds, and fibers such as spandex and polyurethane laminate (PUL). Foams are the largest
Polyurethane
Therapeutic technique
vacuum assisted closure (VAC), is a therapeutic technique using a suction pump, tubing, and a dressing to remove excess wound exudate and to promote healing
Negative-pressure wound therapy
Negative-pressure_wound_therapy
Excavation or structure to provide access to groundwater
access groundwater in underground aquifers. The well water is drawn up by a pump, or using containers, such as buckets that are raised mechanically or by
Well
Fat-laden M2 macrophages seen in atherosclerosis
Foam cells, also called lipid-laden macrophages, are a type of cell that contain cholesterol. These cells are most commonly discussed in the context of
Foam_cell
Emergency vehicle intended to put out fires
and airport area, large water capacity as well as a foam tank, a high-capacity pump, and water/foam monitors. Newer airport crash tenders also incorporate
Fire_engine
Active fire protection device
chemical foam extinguisher with contents Pyrene apparatus type chemical foam, 1960s A Pyrene, brass, carbon tetrachloride extinguisher Pyrene 1 qt. pump-type
Fire_extinguisher
Neighborhood in Pennsylvania, US
74 - Primos-Secane-Westbrook Park, housing one quint, one pumper (including a foam pumper) and one tower ladder truck Companies 26, 36, 37, and 74 are
Drexel_Hill,_Pennsylvania
Process to level concrete by levelling its underlying foundation
compared with foam leveling Slabs to be lifted must typically be within 100 feet of the truck-based pumping equipment Larger holes than foam leveling Without
Concrete_leveling
Type of portable mattress
and thermal insulation. In its simplest form a sleeping pad consists of a foam-like material that is about half a centimeter thick (about a quarter of an
Sleeping_pad
Material
Ceramic foam is a tough foam made from ceramics. Manufacturing techniques include impregnating open-cell polymer foams internally with ceramic slurry and
Ceramic_foam
Australian territory emergency service
include a new fleet of Scania medium and heavy pumpers, and older medium and heavy Freightliner pumps, an aerial appliance, numerous tankers and grass
Northern Territory Fire and Rescue Service
Northern_Territory_Fire_and_Rescue_Service
Nontransparent thermosetting polymer
UFFI is a foam with similar consistency to shaving cream, that is easily injected or pumped into voids. It is normally made on site using a pump set and
Urea-formaldehyde
Items and systems responding to fire
area. Automatic foam suppression systems come in three main forms low expansion, medium expansion, and high expansion. Low expansion foam expands less than
Active_fire_protection
Microscopic spheres
filler in composite materials such as syntactic foam and lightweight concrete. Microballoons give syntactic foam its light weight, low thermal conductivity
Glass_microsphere
Positive-displacement pump
pumped fluid is moving axially without turbulence which eliminates foaming that would otherwise occur in viscous fluids. They are also able to pump fluids
Screw_pump
Insulation material
(natural or synthetic materials), form (batts, blankets, loose-fill, spray foam, and panels), structural contribution (insulating concrete forms, structured
Building_insulation_material
Procedure to treat vascular anomalies
dioxide) in a syringe or by using mechanical pumps. This increases the surface area of the drug. The foam sclerosant drug is more efficacious than the
Sclerotherapy
City in Passaic County, New Jersey, US
life support ambulances 24/7, along with three marine rescue boats, a foam pumper and tender, light rescue truck, and haz-mat unit, which are cross staffed
Clifton,_New_Jersey
Drinking cup intended for a single use
types include paper cups, plastic cups, and foam cups. Expanded polystyrene is used to manufacture foam cups, and polypropylene is used to manufacture
Disposable_cup
Municipal fire department serving the city of Santa Barbara
each of these engines is fitted with a 1500 GPM pump, carry 1500 gallons water, 210 gallons of foam concentrate, and 450 pounds of dry chemical or Halotron
Santa Barbara City Fire Department
Santa_Barbara_City_Fire_Department
Foam Index test is a rapid method to determine the relative levels of Air Entraining Agent (AEA) needed during concrete mixing, with or without mineral
Foam_Index
Ponds used for holding koi
allow the skimmer to run properly. Most floating skimmers will also have a foam that sits underneath the basket to filter out the finer particles. Also,
Koi_pond
Former public hospital in Mornington, Mount Isa, Queensland, Australia
has accelerated since the 1997 fire because of the amount of water and foam pumped into the structure during the fire. Little remains of the furnishings
Underground Hospital, Mount Isa
Underground_Hospital,_Mount_Isa
Process of removing dirt and stains from carpets
cleaning were heavily decried in the United States due to lobbying by dry foam cleaners to the Better Business Bureaus of various states. Hot water extraction
Carpet_cleaning
Silicone foam is a synthetic rubber product used in gasketing, sheets and firestops. It is available in solid, cured form as well as in individual liquid
Silicone_foam
industries. Gear pumps are supplied for foam concentrate use in the fire industry where the concentrate is mixed with the main flow of water. Pumps have been
Albany_Pumps
Safe container for flammable fluids, e.g., for a vehicle or oil heater
part of an engine system in which the fuel is stored and propelled (fuel pump) or released (pressurized gas) into an engine. Fuel tanks range in size from
Fuel_tank
American municipal fire department
400 US gal/min (9,100 L/min) pump and a 1,000 US gal/min (3,800 L/min) deluge gun. They also have a 50-US-gallon (190 L) firefighting foam capacity. Fireboat 4
Los_Angeles_Fire_Department
Motor vehicle
(Firefighting foam). It could be filled through a deck fill hatch (just like the water tank), or with a provided hand pump that connected to a foam fill valve
Oshkosh_MB-5
fuel. Applied using eductor or compressed air foam system (CAFS) and pumped through fire hose to a foam nozzle (or sometimes a less-effective fog nozzle)
Glossary of firefighting equipment
Glossary_of_firefighting_equipment
Government department in Western Australia
arises. Appliance allocation is typically one Urban Pumper and one Light Tanker, with a second pump located at Perth, Vincent, Daglish, Fremantle, Welshpool
Department of Fire and Emergency Services
Department_of_Fire_and_Emergency_Services
Reciprocating internal combustion engine
their OHV I4 line. The Ecotec engine is a DOHC 4-valve design with a lost foam cast aluminium block and head (L850 for 86 mm bore applications, and L880
GM_Ecotec_engine
System for holding workpieces during machining
Vacuum pumps are the usual vacuum source. Vacuum tables are also used in other industries besides machining. In the furniture business, foam cushions
Vacuum_table
Aid for drilling boreholes into the ground
typically utilizing air or natural gas, sometimes with the addition of foaming agents, can be used when downhole conditions permit. The main functions
Drilling_fluid
operates a Scania domestic pump, two six-wheel-drive major foam tenders and a similar but smaller four-wheel-drive light foam tender. The Heathrow FRS also
Airport rescue and firefighting services in the United Kingdom
Airport_rescue_and_firefighting_services_in_the_United_Kingdom
/500gal. Pumper Engine 5 - 2014 Pierce Arrow XT 1500gpm./500gal./500gal. Foam Pumper Engine 6 - 2016 Pierce Arrow XT 1250gpm./500gal. Pumper Engine 8
New_Haven_Fire_Department
Appliance used for drying wet clothes
would be required to vent the dryer. A closed-cycle heat pump clothes dryer uses a heat pump to dehumidify the processing air. Such dryers typically use
Clothes_dryer
Material to reduce heat transfer in structures
loss, such as: cellulose, glass wool, rock wool, polystyrene, polyurethane foam, vermiculite, perlite, wood fiber, plant fiber (cannabis, flax, cotton, cork
Building_insulation
Flat electronic controller used for input in dance video games
slide into the dance pad, which then zips closed around the foam. Certain brands of foam pads put raised plastic sections under the directional buttons
Dance_pad
Rocket engine that uses liquid fuels and oxidizers
the outside of the tank, and later fall and damage the vehicle. External foam insulation can cause issues as shown by the Space Shuttle Columbia disaster
Liquid-propellant_rocket
called memory foam. Fagerdala World Foams managed to produce a mass-produced version in 1991, creating what they call "TEMPUR Foam". Memory foam has been incorporated
NASA_spin-off_technologies
Level sensor
detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float
Float_switch
Imitation weapons made for playing
and will take multiple attempts to shoot. Foam dart blasters are toy guns that fire foam darts, discs, or foam balls. The term "Nerf blaster", referring
Toy_gun
British firefighting equipment company
fire fighting equipment. The name Pyrene was epitomised by their famous 'pump' extinguisher which was installed on public transport, commercial and private
The_Pyrene_Company_Limited
Reciprocating internal combustion engine
flow-controlled oil pump, timing chain, single belt drive of all ancillary units, composite camshafts and cylinder head produced by lost-foam casting. It is
Prince_engine
Fish tank water filter
(pictured top right and left), foam cartridge filter and the undergravel filter. An internal filter may have an electric pump and thus be an internal power
Aquarium_filter
Centralized heat distribution system
fuels or biomass, but heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as heat waste from factories
District_heating
(P44) Bulk Foam (BF) Bulk Water Carrier (BWC) Emergency Water Purification (EWP) Breathing Apparatus Compressor (BAC) Bulk Foam (BF) Portable Pump (PP) South
South Australian Metropolitan Fire Service
South_Australian_Metropolitan_Fire_Service
Rocket engine operation method
fuel then powers the turbine that drives the engine's fuel and oxidizer pumps before being injected into the combustion chamber and burned. Because of
Expander_cycle
Mechanical device which replaces the heart
heart using a single centrifugal pump". ASAIO Trans. 37 (3): M242-3. PMID 1751129. "New Artificial Heart is Made of Foam". Popular Science. 1 October 2015
Artificial_heart
Garment worn to provide thermal protection while wet
garment worn to provide thermal protection while wet. It is usually made of foamed neoprene, and is worn by surfers, divers, windsurfers, canoeists, and others
Wetsuit
Type of firefighting apparatus that specializes in the transport of water
not necessarily have enough pumping capacity to power large hose lines (like a fire engine), though it utilizes a smaller pump to draft from bodies of water
Water_tender
Substance that lowers surface tension
distances at the same pumping capacity due to their flow-improving properties. Special foaming agents (Aqueous Film Forming Foam, AFFF) for combating liquid
Surfactant
Device which removes solid particulates from the air
satellites, and Space Shuttles) Air filters are typically constructed of foam, pleated paper, cotton, or spun fiberglass. Oil bath air filters have fallen
Air_filter
Government agency in San Diego, California
reels. Foam 28 carries 400 gallons of Class A foam, 800 gallons of Class B foam, and a Compressed Air Foam System(CAFS). The main purpose of Foam 28 is
San Diego Fire–Rescue Department
San_Diego_Fire–Rescue_Department
Flexible tube used for delivering water or foam at high pressure, to fight fires
retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. Indoors, it can
Fire_hose
People involved in the nuclear accident
generator 8 electrolyzer. Dyatlov then received the report of Perevozchenko that pump operator Khodemchuk was still unaccounted for. Perevozchenko led Dyatlov
Individual involvement in the Chernobyl disaster
Individual_involvement_in_the_Chernobyl_disaster
Unit of the British Civil Defence Service, 1938–1968
RLHZ Self Propelled Pump) fire engines, Land Rovers, motorcycles and support vehicles such as pipe carriers, mobile kitchens, and foam and water carriers
Auxiliary_Fire_Service
Computer-controlled cutting machine
various materials, such as wood, composites, metals, plastics, glass, and foams. CNC routers can perform the tasks of many carpentry shop machines such
CNC_router
Minimization of heat transfer
insulation such as (glass wool), cellulose, rock wool, polystyrene foam (styrofoam), urethane foam, vermiculite, perlite, and cork. Trapping air is also the principle
Thermal_insulation
Any liquid polymerized siloxane with organic side chains
defoamers (contaminants) in processes where foam is desired, such as in the manufacture of polyurethane foam. Silicone oil is also one of the two main ingredients
Silicone_oil
Serbian tennis player (born 1987)
at the age of four, after his parents gave him a mini-racket and a soft foam ball, which his father said became "the most beloved toy in his life". His
Novak_Djokovic
Tank ship transporting liquefied natural gas
submerged pumps. There are two main cargo pumps which are used in cargo discharge operations and a much smaller pump which is referred to as the spray pump. The
LNG_carrier
Pad or compress applied to wounds
wounds with low amount of discharge. Semi-permeable foam dressing: This dressing is made up of foam with hydrophilic (attracted to water) properties and
Dressing_(medicine)
Chemical process in which foam is used to separate components of a solution
Continuous foam separation is a chemical process closely related to foam fractionation in which foam is used to separate components of a solution when
Continuous_foam_separation
Insulated box used to keep food or drink cool
foam in between. They come in sizes from small personal ones to large family ones with wheels. Disposable ones are made solely from polystyrene foam (such
Cooler
Emergency vehicle specialised in aircraft firefighting operations
large capacities of water and fire fighting foam, are fitted with powerful high-capacity pumps and water/foam cannons, and are capable of delivering firefighting
Airport_crash_tender
Device involving the flow of liquids through tubes
causes a liquid to flow upward, above the surface of a reservoir, with no pump, but powered by the fall of the liquid as it flows down the tube under the
Siphon
Reduced pressure caused by a flow restriction in a tube or pipe
and thus become capable of higher cornering speeds Foam proportioners used to induct fire fighting foam concentrate into fire protection systems Trompe air
Venturi_effect
Bottle used for selling craft beer and other drinks
packaging Drink can Egg carton Evidence packaging Field ration Flour sack Foam food container Food packaging Fuel container Gas cylinder Glass milk bottle
Growler_(jug)
Regulatory term for fluorinated greenhouse gases
refrigeration, air conditioning, heat pumps, fire suppression, electronics, aerospace, magnesium industry, foam, and high voltage switchgear. Their use
Fluorinated_gases
Practical uses for Stirling engine technology
energy input to drive heat transfer in a reversed direction (i.e. a heat pump, or refrigerator). There are several design configurations for Stirling engines
Applications of the Stirling engine
Applications_of_the_Stirling_engine
Fictional character
Tufnel's hobbies include collecting guitars; particularly noteworthy is his Sea Foam Green six-string Fender Bass VI with the price tag still attached, which
Nigel_Tufnel
Explosion at supersonic velocity
polymers Fire safety Fire sprinkler system Fire suppression system Firefighting foam Flame arrester Flame retardant Flashback arrestor Fusible link Gaseous fire
Detonation
American footwear and clothing company
footwear, and workouts. Reebok debuted the Z-Series foam, a combination of dense midsole and outsole foam that is cushioned but durable, in 2014 on the ZQuick
Reebok
Historic site in Queensland, Australia
concrete, two in steel), earth and concrete bunds, two pump houses, a fire station (garage), foam tank and part of a disused railway embankment, located
WWII RAN Fuel Installation, Edge Hill
WWII_RAN_Fuel_Installation,_Edge_Hill
Four patrol vessels
extinguishing system. Aqueous Film Forming Foam (AFFF) is provided for protection of the flight deck via a mixed foam tank and proportioners. Electronics includes
San_Juan-class_patrol_vessel
Machine that washes clothes
all the water used for washing, boiling, and rinsing the laundry from a pump, well, or spring. Water for the laundry would be carried, heated on a fire
Washing_machine
Water supplied to a boiler
supplied to a boiler. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat
Boiler_feedwater
Complete absence of anything; the opposite of everything
(16 February 2023). ""Nothing" doesn't exist. Instead, there is "quantum foam" - When you combine the Uncertainty Principle with Einstein's famous equation
Nothing
Device used in chemical laboratories
propensities the dissolved compounds might give to the mixture (e.g., to foam or "bump"). Commercial instruments are available that include the basic features
Rotary_evaporator
Type of motorcycle
secured the filter better than previous years. Firmer, yet thicker seat foam developed in conjunction with footwear giant Adidas provided a much-needed
KTM_500_series
Reciprocating internal combustion engine
DOHC variants. This was an innovative engine for the time using the lost foam casting process for the engine block and cylinder head. Saturn was one of
Saturn_I4_engine
from pumpers to aerial fire apparatus to special service apparatus, such as rescue vehicles and haz-mat vehicles, as well as quints and mobile foam apparatus
NFPA_1901
FOAM PUMP
FOAM PUMP
Surname or Lastname
Reduced form of Irish McCarley.English
Reduced form of Irish McCarley.English : habitational name from the hamlet of Carley in Lifton, Devon, possibly named with Cornish ker ‘fort’ + Old English lēah ‘woodland clearing’.Perhaps an Americanized form of German Kehrli or Kerle (see Kerley).
Girl/Female
Muslim
Fragrance
Boy/Male
Arabic, British, Muslim, Portuguese
Comedy
Surname or Lastname
English
English : nickname from Middle English fÅde ‘child’, literally ‘that which is fed’, from Old English fÅda ‘food’.
Surname or Lastname
North German form of Knoche.German
North German form of Knoche.German : possibly a habitational name from Knock near Emden.English : topographic name for someone living by a hill, from Middle English knocke ‘hill’ (Old English cnoc).
Female
Hebrew
(× ×„×¢Ö·×) Hebrew unisex name NOAM means "pleasantness."
Surname or Lastname
Americanized form of German Herrle.English and Irish
Americanized form of German Herrle.English and Irish : variant of Harrell.
Surname or Lastname
Americanized form of German Ernst.English
Americanized form of German Ernst.English : variant spelling of Ernest.
Male
Russian
(Фома) Russian form of Greek ThÅmas, FOMA means "twin."
Surname or Lastname
Americanized form of Geman Wehry.English
Americanized form of Geman Wehry.English : nickname from Middle English wery ‘wicked’, ‘acursed’ (from Old English wearg).
Surname or Lastname
Americanized form of Italian Gervasio.English
Americanized form of Italian Gervasio.English : variant of Jarvis.
Boy/Male
Hebrew Russian
Twin.
Boy/Male
American, Australian, Bengali, French, Hebrew, Indian
Good-looking; Sweet Friend; Pleasant
Surname or Lastname
North German form of Backhaus.English
North German form of Backhaus.English : variant of Backus.
Boy/Male
Welsh
Legendary son of Nwyvre.
Surname or Lastname
Americanized form of French Petitjean.English
Americanized form of French Petitjean.English : variant spelling of Pettyjohn.
Surname or Lastname
Americanized form of German Oesterling.English
Americanized form of German Oesterling.English : derivative of Easter 1, with the addition of the Germanic suffix -ling.
Girl/Female
Arabic, Assamese, Gujarati, Indian, Jain, Kannada, Muslim, Sindhi
Fragrance; Pleasant Smell
Girl/Female
Indian
Fragrance
Surname or Lastname
Americanized form of German Gehr.English
Americanized form of German Gehr.English : perhaps a variant of Geary 3.Hungarian : from a reduced form of the personal name Gergely, Latin Gregorius (see Gregory).
FOAM PUMP
FOAM PUMP
Girl/Female
English
Beautiful seacoast.
Girl/Female
Biblical Hebrew
Daughter of the Lord.
Boy/Male
Arabic
A Tastey; Good; Honey
Girl/Female
Hindu, Indian
Divine
Boy/Male
Hindu, Indian
Vishnu
Girl/Female
Tamil
Girl/Female
Tamil
Movement
Boy/Male
Indian, Tamil
Handsome
Boy/Male
Indian, Punjabi, Sikh
Coloured in the Love of Lord
Boy/Male
Danish, French, German
Strong and Masculine
FOAM PUMP
FOAM PUMP
FOAM PUMP
FOAM PUMP
FOAM PUMP
v. i.
To run to a form, as a hare.
n.
Constitution; mode of construction, organization, etc.; system; as, a republican form of government.
v. i.
To cover, smear, or fill with loam.
a.
Covered with foam; frothy; spumy.
n.
To form foam, or become filled with foam; -- said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action.
n.
To gather foam; to froth; as, the billows foam.
n.
That assemblage or disposition of qualities which makes a conception, or that internal constitution which makes an existing thing to be what it is; -- called essential or substantial form, and contradistinguished from matter; hence, active or formative nature; law of being or activity; subjectively viewed, an idea; objectively, a law.
n.
A suffix used to denote in the form / shape of, resembling, etc.; as, valiform; oviform.
v. t. & i.
To give a new form to; to form anew; to take form again, or to take a new form; as, to re-form the line after a charge.
n.
Established method of expression or practice; fixed way of proceeding; conventional or stated scheme; formula; as, a form of prayer.
v.t.
To cause to foam; as,to foam the goblet; also (with out), to throw out with rage or violence, as foam.
adv. & a.
In a foaming state; as, the sea is all afoam.
n.
The act of roaming; a wandering; a ramble; as, he began his roam o'er hill amd dale.
n.
Show without substance; empty, outside appearance; vain, trivial, or conventional ceremony; conventionality; formality; as, a matter of mere form.
n.
To give form or shape to; to frame; to construct; to make; to fashion.
n.
To provide with a form, as a hare. See Form, n., 9.
n.
Mode of acting or manifestation to the senses, or the intellect; as, water assumes the form of ice or snow. In modern usage, the elements of a conception furnished by the mind's own activity, as contrasted with its object or condition, which is called the matter; subjectively, a mode of apprehension or belief conceived as dependent on the constitution of the mind; objectively, universal and necessary accompaniments or elements of every object known or thought of.
n.
The white substance, consisting of an aggregation of bubbles, which is formed on the surface of liquids, or in the mouth of an animal, by violent agitation or fermentation; froth; spume; scum; as, the foam of the sea.
v. i.
To take a form, definite shape, or arrangement; as, the infantry should form in column.