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Theoretical cosmological structure
In modern models of physical cosmology, a dark matter halo is a basic unit of cosmological structure. It is a hypothetical region that has decoupled from
Dark_matter_halo
Observed discrepancy in galactic angular momenta
dwarf stars or interstellar gas and dust, he had clearly detected the dark matter halo of this galaxy. The Carnegie telescope (Carnegie Double Astrograph)
Galaxy_rotation_curve
Hypothetical form of dark matter in galactic halos
Massive Compact Halo Object (MACHO) is a kind of astronomical body that might explain the apparent presence of dark matter in galactic halos. A MACHO is a
Massive_compact_halo_object
Spherical component of a galaxy
comprise its halo: the stellar halo the galactic corona (hot gas, i.e. a plasma) the dark matter halo The distinction between the halo and the main body
Galactic_halo
Mass of an astrophysical system
the virial theorem applies. In the context of galaxy formation and dark matter halos, the virial mass is defined as the mass enclosed within the virial
Virial_mass
System of differential equations
simulating dark matter halo distributions, due to its isothermal, non-interactive behavior. Searches for structure in galaxy formation, dark matter formation
Jeans_equations
China's national astronomical research institute
dark matter halo between galaxies. This GADGET-4 simulation, with a dynamic range over 30 magnitudes, plotted a clear structure of dark matter haloes
National Astronomical Observatories of China
National_Astronomical_Observatories_of_China
Hypothetical form of cold dark matter proposed to solve the cuspy halo problem
Fuzzy cold dark matter is a hypothetical form of cold dark matter proposed to solve the cuspy halo problem. It would consist of extremely light scalar
Fuzzy_cold_dark_matter
Experiment using a resonant microwave cavity to find dark matter particles
superconducting magnet to search for cold dark matter axions in the local galactic dark matter halo. Unusual for a dark matter detector, it is not located deep
Axion_Dark_Matter_Experiment
Hypothetical invisible cosmic material
dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy
Dark_matter
Unsolved problem in physics
The cuspy halo problem (also known as the core-cusp problem) is a discrepancy between the inferred dark matter density profiles of low-mass galaxies and
Cuspy_halo_problem
Galaxy that orbits a larger galaxy due to gravitational attraction
star formation within galaxies and the distribution of dark matter within the dark matter halo. As a result, satellite galaxies serve as a testing ground
Satellite_galaxy
Galaxy in the constellation Hydra
NGC 3311 by a tidal interaction with the dark matter halos of the infalling group of dwarf galaxies or halo associated with NGC 3309. This tidal interaction
NGC_3311
Hypothetical type of dark matter in physics
abandoning the ΛCDM model. The density distributions of dark matter halos in cold dark matter simulations (at least those that do not include the impact
Cold_dark_matter
Subfield of astronomy
Dark matter halo and galaxy profiles Navarro–Frenk–White profile – CDM simulation-derived dark matter halo profile. Einasto profile – Dark matter halo
Outline_of_astrophysics
dark matter to about that of a Solar Mass for Massive compact halo object. The lower limit of dark matter is constrained by the knowledge that dark matter
Direct detection of dark matter
Direct_detection_of_dark_matter
Spatial mass distribution of dark matter
models for the structure of dark matter halos.. It describes the average density of dark matter in galaxy and galaxy cluster halos as a function of distance
Navarro–Frenk–White_profile
Parameter of the halo model of galaxy clustering
galactic matter within a dark matter halo; the distribution of velocities of galactic matter relative to dark matter within a dark matter halo. Dark matter Large-scale
Halo_occupation_distribution
Dark matter halo formation model
nearly homogeneous matter in the early Universe into collapsed virialized structures - dark matter halos. This model assumes that halos are spherical and
Spherical_collapse_model
Extremely faint candidate satellite galaxy of the Milky Way
system. This very high value may indicate the presence of a massive dark matter halo, suggesting that Ursa Major III could indeed be a true dwarf galaxy
Ursa_Major_III
Unexplained gamma rays from the Galactic Center
to obtain the likely shape of the galaxy's dark matter halo, concluded that self-annihilation of dark matter WIMPs and a population of fast-rotating old
Galactic_Center_GeV_excess
Galaxy containing the Solar System
seems to be dark matter, an unknown and invisible form of matter that interacts gravitationally with ordinary matter. A dark matter halo is conjectured
Milky_Way
Hypothetical form of dark matter
results in isothermal cores in the central region of dark matter haloes. If the self-interacting dark matter is in hydrostatic equilibrium, its pressure and
Self-interacting_dark_matter
Blue Straggler star in Small Magellanic Cloud
ISSN 0004-6256. Hattori, Kohei; Valluri, Monica (2019-07-06). "The shape of the dark matter halo revealed from a hypervelocity star". Proceedings of the International
2MASS_J01020100−7122208
Galaxy in the constellation Coma Berenices
mass clearly is not large enough to hold such an extensive gas halo. The dark matter halo is estimated to have 10 times the mass of the stars in the galaxy
NGC_4555
Hypothetical particles that may constitute dark matter
are considered one of the main candidates for cold dark matter, the others being massive compact halo objects (MACHOs) and axions. These names were deliberately
Weakly interacting massive particle
Weakly_interacting_massive_particle
Astronomer and science communicator (born 1983)
super-computers to build and test models of the growth of galaxies within vast dark matter halos, and in particular focuses on the formation of the first galaxies
Alan_Duffy_(astronomer)
stellar mass-to-light ratio a large central compact mass and a standard dark matter halo". Monthly Notices of the Royal Astronomical Society. 1706 (1): 383–393
List of most massive black holes
List_of_most_massive_black_holes
Merger whereby at least two galaxies collide
dark matter halo mergers, a fundamental problem in modelling merger history tree is to define when a halo at one time step is a descendant of a halo at
Galaxy_merger
Spiral galaxy in the constellation Canes Venatici
radius of 33,000 light-years (10 kiloparsecs). The form suggests a dark matter halo that is offset with respect to the inner region. The reason for the
Messier_63
Galaxy in the constellation Leo
properties of dark matter. Detailed models of the lens mass distribution, starlight and stellar kinematics indicates that the galaxy cluster's dark halo has a
Abell_1201_BCG
Conjectured dark matter in cosmology
Hypothetical elementary particle Dark matter halo – Theoretical cosmological structure Light dark matter – Dark matter weakly interacting massive particles
Scalar_field_dark_matter
Galaxy cluster in the constellation Phoenix
(Sagittarius A*) Twice the mass of the Triangulum Galaxy, including its dark matter halo. Assuming it is a non-rotating black hole, an immense event horizon
Phoenix_Cluster
Galaxy in constellation Coma Berenices
luminosity galaxyPages displaying short descriptions of redirect targets Dark matter halo – Theoretical cosmological structure DGSAT I – Ultra diffuse galaxy
Dragonfly_44
cosmology, the halo mass function is a mass distribution of dark matter halos. Specifically, it gives the number density of dark matter halos per mass interval
Halo_mass_function
Theoretical construct in astrophysics
type of dark matter halo containing neutral hydrogen gas. These clouds are characterized by their potential to reveal the nature of dark matter and the
RELHIC
Class of galaxy that has spiral structures extending from their cores
near-spherical halo of stars, including many in globular clusters A supermassive black hole at the very center of the bulge A near-spherical dark matter halo The
Spiral_galaxy
Mathematical model
predicting the number of objects (such as galaxies, galaxy clusters or dark matter halos) of a certain mass within a given volume of the Universe. It was described
Press–Schechter_formalism
Hypothesized galaxy with no, or very few, stars
A dark galaxy is a hypothesized galaxy with dark matter but no, or very few, stars. They received their name because they have no visible stars but may
Dark_galaxy
Astrophysicist
mass concentration including dark matter. In 2006, he and collaborators outlined a method to constrain dark matter halo profiles using imaging data alone
Marc_Seigar
Reionization-Limited HI Cloud near to the spiral galaxy M94
(September 2023), "Is a Recently Discovered H I Cloud near M94 a Starless Dark Matter Halo?", The Astrophysical Journal, 956 (1): 1, arXiv:2309.03253, Bibcode:2023ApJ
Cloud-9_(RELHIC)
Particle detector experiment
caused by the variation of the velocity of the detector relative to the dark matter halo as the Earth orbits the Sun. It is located underground at the Laboratori
DAMA/LIBRA
Topics referred to by the same term
from As the Dark Against My Halo "Dark Matter", a song by Lagwagon from Railer DarkMatter (spoken word), queer South Asian artists DarkMatter (Emirati company)
Dark_Matter_(disambiguation)
Subfield of cosmology
the dark matter does not dissipate as it only interacts gravitationally, it remains distributed outside the disk in what is known as the dark halo. Observations
Galaxy formation and evolution
Galaxy_formation_and_evolution
American physicist
Zurek (7 June 2013). "Beyond collisionless dark matter: Particle physics dynamics for dark matter halo structure". Phys. Rev. D. 87 (11). arXiv:1302
Kathryn_Zurek
Meta-cold dark matter (mCDM) is a form of cold dark matter proposed to solve the cuspy halo problem. It consists of particles "that emerge relatively
Meta-cold_dark_matter
Galaxy in the constellation Virgo
surrounded by a massive dark matter halo. Radio observations and Hubble Space Telescope images of M84 have revealed two jets of matter shooting out from its
Messier_84
Galaxy in the constellation Cetus
although Kormendy and Ho et al stated that "dark matter halos are scale-free, and the SMBH-dark matter coevolution is independent from the effects of
Holmberg_15A
Topics referred to by the same term
Look up HALO, Halo, halo, or halo- in Wiktionary, the free dictionary. HALO, halo, halos or haloes may refer to: Halo (optical phenomenon), with ice crystals
Halo
Computer simulation of the universe
of the Bolshoi simulation is to compute and model the evolution of dark matter halos, thereby rendering the invisible visible for astronomers to study
Bolshoi cosmological simulation
Bolshoi_cosmological_simulation
structure and evolution of their dark matter component. He is known for his theoretical studies of dark matter halos carried out using massive N-body
Julio Navarro (astrophysicist)
Julio_Navarro_(astrophysicist)
Dark matter weakly interacting massive particles candidates with masses less than 1 GeV
heavier than warm dark matter and hot dark matter, but are lighter than the traditional forms of cold dark matter, such as Massive Compact Halo Objects (MACHOs)
Light_dark_matter
Phenomenon whereby a galaxy shuts down its star formation
quiescent. Additionally, quenched galaxies also exist in more massive dark matter halos and can be found in denser environments, such as clusters or groups
Quenching_(astronomy)
Lyman-break galaxy in the constellation Aquarius
protogalaxies or as the fragmentation of dense gas clouds within a single dark matter halo. The star formation rate of PAN-z14-1 is estimated at 4.8+13.6 −4.8
PAN-z14-1
Attraction of masses and energy
gravitational attraction between clouds of primordial hydrogen and clumps of dark matter in the early universe caused the hydrogen gas to coalesce, eventually
Gravity
Polar-ring galaxy in the constellation Pisces
occurring. Data about the dark matter halo of NGC 660 can be extracted by observing the gravitational effects of the dark matter on the disk and ring's rotation
NGC_660
Dark galaxy in the Perseus cluster
having a dark matter halo mass of approximately 5.7 × 10 10 M ⊙ {\displaystyle 5.7\times 10^{10}M_{\odot }} , meaning that it is a highly dark matter dominated
CDG-2
Star-containing portion of a galactic halo
contained within the stellar halo, and that it extends to over 100 kiloparsecs from the galactic centre. Dark matter halo Galactic corona Kinman, T. D
Stellar_halo
Largest type of black hole
black hole of around 20 M☉. These stars may have also been formed by dark matter halos drawing in enormous amounts of gas by gravity, which would then produce
Supermassive_black_hole
Galaxy in the constellation Virgo
has a unique velocity dispersion profile, which indicates a massive dark matter halo. The Abell 2029 cluster in which IC 1101 resides accretes roughly 450
IC_1101
Stellar stream
GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo". The Astrophysical Journal Letters. 978 (2): L23. arXiv:2409.19493
GD-1
Galaxy in the constellation Fornax
1010 M☉, and a total mass of 9.4 × 1010 M☉. However, the mass of the dark matter halo surrounding the galaxy is around 4.3 × 1012 M☉. NGC 1427 is the brightest
NGC_1427
Astronomical object type
blob in the GOODS South field: evidence for cold accretion onto a dark matter halo". Astronomy and Astrophysics Letters. 452 (3): L23–L26. arXiv:astro-ph/0512396
Lyman-alpha_blob
Theoretical astrophysicist
scattering and the formation of exponential discs in self-gravitating systems Wu et al. Formula (1) is the Hernquist profile (for dark matter halo) v t e
Lars_Hernquist
Simulation of a dynamical system of particles
structure formation such as galaxy filaments and galaxy halos from the influence of dark matter. Direct N-body simulations are used to study the dynamical
N-body_simulation
Spiral-shaped regions of enhanced brightness within the galactic disc in spiral galaxies
can emerge in specific circumstances. One such instance is when the dark matter halo rotates in opposition to the galaxy disk. The width of spiral arms
Spiral_arm
Tightly packed group of stars within a larger formation
Spitler, L. R.; Forbes, D. A. (2009). "A new method for estimating dark matter halo masses using globular cluster systems". Monthly Notices of the Royal
Galactic_bulge
of the galaxy. Calculations have shown that sufficiently massive dark matter haloes slow the rotation, causing the corotation radius to be greater than
Corotation_circle
Czech-Australian astrophysicist
past the Milky Way, arguing the result indicates the absence of a dark matter halo. The galaxy-bar test: independently conducted work with Roshan et al
Pavel_Kroupa
Aggregation of galaxies with 50 or fewer members
protogalaxies embedded in dark matter haloes that are in the process of fusing into group-formations of singular dark matter halos. Illustris project see
Galaxy_group
Unsolved problem in cosmology
distribution of matter in the universe. In simulations, dark matter clusters hierarchically, in ever increasing numbers of halo "blobs" as halos' components'
Dwarf_galaxy_problem
Galaxy in the constellation of Sculptor
multiple parts as they extend into the outer disk. The galaxy has a dark matter halo that has an estimated 3.5 times the mass of the gaseous and stellar
NGC_289
been used to describe many types of system, including galaxies, and dark matter halos. NFW profile J. Einasto (1965), Kinematics and dynamics of stellar
Einasto_profile
British astronomer (born 1951)
gravitationally driven condensation of gas at the centres of extended dark matter halos as these grow steadily in mass through accretion and merging. This
Simon_White
Theoretical model of dark matter
[citation needed] Todoroki, Keita; Medvedev, Mikhail V (1 March 2022). "Dark matter haloes in the multicomponent model. III. From dwarfs to galaxy clusters"
2cDM_model_of_dark_matter
Mathematical model of the Big Bang
The Lambda-CDM, Lambda cold dark matter, or ΛCDM model is the standard form of the Big Bang theory of cosmology governing the chronology of the universe
Lambda-CDM_model
Computer simulated universes
2019). "UniverseMachine: The correlation between galaxy growth and dark matter halo assembly from z = 0−10". Monthly Notices of the Royal Astronomical
UniverseMachine
Computer simulation of the universe
use the MXXL simulation to study the distribution of galaxies and dark matter halos on very large scales and how the rarest and most massive structures
Millennium_Run
Mathematical function
Sérsic profiles can also be used to describe dark matter halos, where the Sérsic index correlates with halo mass. The brightest elliptical galaxies often
Sérsic_profile
Spiral galaxy in the constellation of Pisces
A.; Thomas, J.; Saglia, R. P.; Bender, R. (2017). "The density of dark matter haloes of early-type galaxies in low-density environments". Monthly Notices
MCG_+01-02-015
Constellation in the southern celestial hemisphere
collective mass. This suggests that the galaxy is surrounded by a dark matter halo, which provides the necessary mass. One of the closest galaxy clusters
Centaurus
Astronomical survey
particular, the key scientific objectives are: A measurement of the dark matter halo mass function of groups and clusters using group velocity dispersion
Galaxy And Mass Assembly survey
Galaxy_And_Mass_Assembly_survey
Scientific study of celestial objects
studies of matter in the Milky Way and other galaxies show there is more mass than can be accounted for by visible matter. A dark matter halo appears to
Astronomy
Galaxy in the constellation of Hydra
galaxy involved in the merger was a gas-poor galaxy. NGC 4993 has a dark matter halo with an estimated mass of 193.9×1010 M☉. NGC 4993 has an estimated
NGC_4993
Galaxies bound to the Milky Way
of the edge of the disc of the Milky Way Galaxy to the edge of the dark matter halo of the Milky Way at 980,000 ly (300 kpc) from the center of the galaxy
Satellite galaxies of the Milky Way
Satellite_galaxies_of_the_Milky_Way
German physicist and cosmologist
perspective 1: dark matter halo mass density profiles (paper to explain power-law mass density profiles of cosmic structures) Self-gravitating dark matter gets
Jenny_Wagner
Dynamical instability of thin or elongated galaxies
is probably responsible for the fact that elliptical galaxies and dark matter haloes never have axis ratios more extreme than about 3:1, since this is
Firehose_instability
American astrophysicist
dark matter halos, and the evolution of structures like the Milky Way and the Local Group. He has explored models of complex, self-interacting dark matter
James_Steven_Bullock
Astronomical measure
between the two is not straight forward. If one assumes that every dark matter halo hosts one galaxy, then the Press-Schechter model yields a slope α ∼
Luminosity function (astronomy)
Luminosity_function_(astronomy)
Galaxy in the constellation Cetus
used to calculate its distance using the Tully–Fisher relation. Its dark matter halo was found to be core-dominated, in agreement with predictions from
NGC_755
Power law for galaxies
may be additional hidden relationships between galaxies and their dark matter halos that are not yet fully understood. The gravitational potential of
Faber–Jackson_relation
Galaxy in the constellation Virgo
; Adams, J. J. (March 2011). "Galaxy Kinematics with VIRUS-P: The Dark Matter Halo of M87". The Astrophysical Journal. 729 (2): 129. arXiv:1101.1957.
Messier_87
System of stars and interstellar matter
systems, stellar remnants, substellar objects, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek galaxias
Galaxy
Humorous concept in scientific models
by simplifying assumptions about spherical symmetries in galactic dark-matter haloes was titled "Milking the spherical cow – on aspherical dynamics in
Spherical_cow
Physical theory of the cosmos
these features, dark matter is currently the subject of most active laboratory investigations. Remaining issues include the cuspy halo problem and the
Big_Bang
Galaxy filament
nucleus Bar Bulge Central massive object Galactic Center Dark matter halo Disc Disc galaxy Halo corona Galactic plane Galactic ridge Interstellar medium
Coma_Filament
Indian astronomer
from the direct gravitational collapse of primordial gas in early dark matter halos. This model addresses the problem of how supermassive black holes
Priyamvada_Natarajan
Galaxy filament
nucleus Bar Bulge Central massive object Galactic Center Dark matter halo Disc Disc galaxy Halo corona Galactic plane Galactic ridge Interstellar medium
Ursa_Major_Filament
English astrophysicist (born 1984)
"Simulation of a Forming Dark Matter Halo" – via YouTube. Farnes, Jamie (21 November 2017). "A Unifying Theory of Dark Energy and Dark Matter" – via YouTube. Farnes
Jamie_Farnes
Astrophysicist
Nonlinear Cosmological Power Spectrum and Bispectrum from Analytic Dark Matter Halo Profiles and Mass Functions". The Astrophysical Journal. 543 (2): 503–513
Ma_Chung-pei
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DARK MATTER-HALO
DARK MATTER-HALO
Surname or Lastname
South German (also Mütter)
South German (also Mütter) : occupational name for an official employed to measure grain, from Middle High German mutte, mütte ‘bushel’, ‘grain measure’ (Latin modius) + the agent suffix -er.English : variant spelling of Muter.
Surname or Lastname
English
English : probably a variant of Mander.Belcher Manter is recorded in Plymouth, MA, in 1657. John Manter (1658–1744), possibly a son of Belcher, was the founder of a family associated with Martha’s Vineyard.
Surname or Lastname
English
English : variant of Matter.English : probably a metonymic occupational name for a mattress maker or seller, from Middle English, Old French materas, or less likely for a maker of crossbow bolts, spears, and lances, from the Middle English homonym materas.Dutch : variant of Matter 2.
Surname or Lastname
English
English : nickname from Middle English martre, marter ‘marten’ (Old French martre).Dutch : possibly from marter ‘marten’.
Female
English
 Middle English name DARA means "brave, daring." Compare with another form of Dara.
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Boy/Male
Gaelic Hebrew English
Dark.
Surname or Lastname
German
German : topographic name for someone who lived by a meadow, from Matte 1 + -er, suffix denoting an inhabitant.English and Dutch : occupational name for a maker of mats, from an agent derivative of Middle English matte, Middle Dutch mat ‘mat’.
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Telugu
Dark Skinned; Charioteer of Lord Krishna; Tree
Surname or Lastname
English
English : variant spelling of Dark.
Male
Italian
Italian form of Hebrew Mattithyah, MATTEO means "gift of God."
Male
Serbian
(Дарко) Serbian name derived from Slavic dar, DARKO means "gift."
Girl/Female
English
Lark.
Male
Hebrew
(דֶּרַע) Hebrew name DARA means "the arm." In the bible, this is the name of a son of Zerah. Compare with other forms of Dara.
Surname or Lastname
English
English : occupational name for a maker or seller of hats, Middle English hatter(e).
Surname or Lastname
English and Scottish
English and Scottish : nickname for someone who behaved in a masterful manner, or an occupational name for someone who was master of his craft or a schoolmaster, from Middle English maister (Old French maistre, Latin magister). In early instances this surname was often borne by people who were franklins or other substantial freeholders, presumably because they had laborers under them to work their lands. In Scotland Master was the title given to administrators of medieval hospitals, as well as being born by the eldest sons of barons; thus, the surname may also have been acquired as a metonymic occupational name by someone in the service of such.Either a dialect form or an Americanized form of German Meister.Indian (Gujarat and Bombay city) : Parsi occupational name for someone who was a master of his craft, from the English word master.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
Surname or Lastname
English
English : occupational name for a mower or reaper of grass or hay, Old English mǣðere. Compare Mead, Mower. Hay was formerly of great importance, not only as feed for animals in winter but also for bedding.English : in southern Lancashire, where it has long been a common surname, it is probably a relatively late development of Madder (see Mader).English : The prominent Mather family of New England were established in America by Richard Mather (1596–1669) in 1635. He was a Puritan clergyman from a well-established family of Lowton, Lancashire, England. After he emigrated, he was in great demand as a preacher, finally settling in Dorchester, MA. His son Increase Mather (1639–1723) was a diplomat and president of Harvard. He married his step-sister Maria Cotton, herself the daughter of an eminent Puritan divine, John Cotton. Their son Cotton Mather (1663–1728) bore both family names. The latter was a minister who is remembered for his part in witchcraft trials, but he was also a man of science and a fellow of the Royal Society in London.
Girl/Female
American, Anglo, Australian, British, English
Born at Easter; Goddess of the Dawn; Easter Time
Surname or Lastname
English
English : nickname for someone with dark hair or a dark complexion, from Middle English darke, Old English deorc ‘dark’. In England, the surname is most frequent in the West Country.
DARK MATTER-HALO
DARK MATTER-HALO
DARK MATTER-HALO
DARK MATTER-HALO
DARK MATTER-HALO
DARK MATTER-HALO
DARK MATTER-HALO
n.
A dark shade or dark passage in a painting, engraving, or the like; as, the light and darks are well contrasted.
a.
Dark.
v. t.
To put a mark upon; to affix a significant mark to; to make recognizable by a mark; as, to mark a box or bale of merchandise; to mark clothing.
v. t.
To inclose in a park, or as in a park.
n.
Poison; venom; corrupt matter from a sore.
n.
Preeminence; high position; as, particians of mark; a fellow of no mark.
n.
Affair worthy of account; thing of consequence; importance; significance; moment; -- chiefly in the phrases what matter ? no matter, and the like.
v. i.
To mutter; as prayers.
a.
Full of substance or matter; important.
v. i.
To form pus or matter, as an abscess; to maturate.
v. i.
To mutter; to mumble; as, to patter with the lips.
v. t.
To cover or inclose with bark, or as with bark; as, to bark the roof of a hut.
a.
Evincing black or foul traits of character; vile; wicked; atrocious; as, a dark villain; a dark deed.
a.
Dark as a pitch; pitch-black.
a.
Destitute, or partially destitute, of light; not receiving, reflecting, or radiating light; wholly or partially black, or of some deep shade of color; not light-colored; as, a dark room; a dark day; dark cloth; dark paint; a dark complexion.
n.
See Alma mater, Dura mater, and Pia mater.
a.
Dark.
n.
A quick succession of slight sounds; as, the patter of rain; the patter of little feet.
n.
The cant of a class; patois; as, thieves's patter; gypsies' patter.
n.
Post; mail; also, the mail or postal arrangements; -- spelt also dawk, and dauk.
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