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Decreasing in strength, intensity, power, etc.
Waning, from wane, from M.E. wanen (v.), O.E. wanian "to lessen;" cf. O.S. wanon, O.N. vana, O.Fris. wania, M.Du. waenen, O.H.G. wanon "to wane, to grow less."
Kâhandé "waning, decreasing;" from kâstan, kâhidan "to decrease;" Mid.Pers. kâhitan, kâstan, kâhênitan "to decrease, diminish, lessen;" Av. kasu- "small, little" (Mod.Pers. keh); Proto-Iranian *kas- "to be small, diminish, lessen."
helâl-e kâhandé, barn-e ~
Fr.: croissant descendant
The crescent phase of the Moon following the → last quarter which finally disappears with setting Sun.
Fr.: lune gibbeuse descendante
m mâng-e kâhandé (#)
Fr.: lune descendante
A state of armed conflict between states, or between groups within states.
From M.E. werre, from O.E. werre, wyrre, from Old Northern Fr. werre, akin to O.H.G. werra "confusion, strife, quarrel," Du. war "confusion, disarray," O.E. wyrsa, wiersa "worse," O.Norse verri "worse; confounded;" ultimately from PIE *wers- "to confuse, mix up."
Jang, from Mid.Pers. jang "struggle, battle, fight."
M.E.; O.E. wearm (cf. O.S., O.Fris., M.Du., O.H.G., Ger. warm, O.N. varmr, Goth. warmjan "to warm"); cognate with Pers. garm, as below.
Garm "warm;" Mid.Pers. garm "warm;" O.Pers. garma-pada "name of the fourth month" (June-July); Av. garəma- "warm; heat;" cf. Skt. gharmá "heat;" Gk. therme, thermos; L. formus "warm;" E. warm, as above; PIE base *ghworm-/*ghwerm- "warm."
Fr.: absorbeur chaud
A cloud of ionized gas within → active galactic nuclei (AGN) that causes absorption at → soft X-ray wavelengths. Warm absorbers were first suggested by Halpern (1984) to explain Einstein data of the quasar MR 2251-178. They are dubbed "warm" absorbers as they imply gas at temperatures of 104-105 K; the gas is → photoionized, not collisionally ionized. High resolution observations of warm absorbers have shown that they are outfowing. See also → cold absorber (Ceri Ellen Ashton, 2005, A Study of Warm Absorbers in Active Galactic Nuclei, Thesis, Mullard Space Science Laboratory Department of Space and Climate Physics University College London ).
Fr.: front chaud
Meteo.: A leading edge that advances in a mass of air and replaces cooler air by warm air.
warm intercloud medium
madim-e andarabri-ye garm
Fr.: milieu internuage chaud
A component of the → interstellar medium consisting of an extremely tenuous (density 0.1 to 10 cm-3) and relatively warm gas (temperature about 8,000 K) filling the space between denser neutral and ionized gas. Hydrogen is partly ionized, partly atomic and observed by the → 21-centimeter line in emission.
warm-hot intergalactic medium
madim-e andar-kahkašâni garm-dâq
Fr.: milieu intergalactique chaud
The space containing a cluster of galaxies filled with a tenuous gas of temperature 105 to 107 K and density 10-6 to 10-4 cm-3. WHIM has been continuously shock-heated during the process of structure formation. It is so highly ionized that it can only absorb or emit far-ultraviolet and soft X-ray photons, primarily at spectral lines of highly ionized C, O, Ne, and Fe. WHIM is thought to be the main reservoir of missing baryons.
The vertical twisting of a → galactic disk in its outer parts. Many → spiral galaxies, including our Milky Way, appear to have warps in the outer reaches of their stellar and gas disks. The rotating body of stars and gas that characterizes a spiral galaxy is generally flat, but the outer regions may deviate from the plane of the disk. The causes are multiple, some warps can come from spontaneous instability, some result from interactions between galaxies, and many reflect the external gas → accretion from intergalactic matter filaments.
M.E. werpen, OE weorpan "to throw;" cf. O.S. werpan, O.N. verpa "to throw," Swed. värpa "to lay eggs," Du. werpen, Ger. werfen "to throw; to distort." Related to warp "threads running lengthwise in a fabric."
Tâb "twisting, bending, waving, a curling lock," variants tâv, tow, tew, from tâbidan, tâftan "to twist, to spin, to bend, to crook," p.p. tâftah "spun, silk or linen cloth," loaned into E. as taffeta (from O.Fr. taffetas, from It. taffeta); similarly Gk. tapetion "little carpet" is probably from this Iranian origin (from which tapestry, tapis); Proto-Ir. *tâp- "to twist, to wind;" cf. L. tempus "time (span);" Lith. tempti "to stretch;" Russ. tepsti "to tighten."
gerde-ye tâbdâr, disk-e ~
Fr.: disque gauchi
Verbal noun from → warp (v.).
zegil (#), veruk (#)
A hard rough lump growing on the skin, caused by infection with certain viruses and occurring typically on the hands or feet (TheFreeDictionary.com).
M.E., from O.E. weart "wart," cf. O.Norse varta, O.Frisian warte, Du. wrat, O.H.G. warza, Ger. Warze, Swed. varta, Russ. vered "ulcer," perhaps ultimately from the same source as L. verruca "a steep place, swelling, wart" (Fr. verrue, Sp. verruga, Catalan berruga, It. verruca), ultimately from PIE *uer-s- "a steep place, height," from *uer- "highland, high place, top;" cf. Gk. ouranos "sky."
Zegil "wart," maybe related to Pers. gereh "knot,"
ultimately from prefixed (*uz-,
→ ex-) *graθH- "to tie (a knot)."
M.E. washen; O.E. wascan, wæscan; cf. O.N. vaska, M.Du. wasscen, Du. wassen, Ger. waschen, from stem *wat-, the root of → water.
Mid.Pers. šustan, šuy- "to wash;" Av. xšaoδah- "flush of water," xšudra- "liquid, fluid; semen;" cf. Skt. ksod- "to dissolve;" Proto-Ir. *xšaud- "to wash" (Cheung 2007).
Washington Double Star Catalog
kâtâlog-e setâregân-e dotâyi-ye Washington
Fr.: Washington Double Star Catalogue
A stellar catalog which is the world's principal database of astrometric → double star information. It is maintained by the United States Naval Observatory. The WDS Catalog contains positions (J2000), discoverer designations, epochs, position angles, separations, magnitudes, spectral types, proper motions, and, when available, Durchmusterung numbers and notes for the components of 142552 systems (as of Feb 27 2018).
M.E., from O.Fr. wast, g(u)ast, from L. vastum, neuter of vastus "waste."
Âxâl "waste, rubbish," of unknown origin.
The normal oxide of hydrogen with formula H2O. Pure water's → melting point is 0°C and its → boiling point 100 °C at sea level. Water has a → maximum density at very nearly 4°C of (by definition) 1.0000 g cm-3. It then expands as its temperature drops to 0°C, the density being 0.9998 g cm-3 . On freezing, it expands still further, giving ice a density of 0.9168 g cm-3 at 0°C, whereas water has a density of 0.9998 g cm-3 at 4 °C. A → water molecule consists of one → oxygen (O) atom bonded to two → hydrogen (H) atoms. The → specific heat of water, 1 calorie per gram per 1 degree C (cal/g/°C), is higher than most other substances. Therefore, water both absorbs and releases heat more slowly than land. This causes land areas to heat more rapidly and to higher temperatures and also cool more rapidly and to lower temperatures, compared to oceans. The high heat capacity of water also explains why the temperatures of land near a body of water are more moderate. The high heat capacity of water keeps its temperature within a relatively narrow range, causing nearby coastal areas to also have a narrow daily and seasonal temperature range. See also → heavy water, → ortho-water, → para-water.
Water, from O.E. wæter (cognates: Du. water; O.H.G. wazzar; Ger. Wasser; Goth. wato); cf. Gk. hydro-, combining form of hydor "water," cognate with Skt. udá- "water;" Khotanese ūtcā "water;" Hittite uātar; L. unda "wave;" O.C.S., Rus. voda; Lith. vanduo; from PIE base *wed- "water; wet."
Âb "water," variants iv, êw, âp; from Mid.Pers. âb "water;" O.Pers. ap- "water;" Av. ap- "water;" cf. Skt. áp- "water;" Hitt. happa- "water;" PIE āp-, ab- "water, river;" cf. Gk. Apidanos, proper noun, a river in Thessalia; L. amnis "stream, river" (from *abnis); O.Ir. ab "river," O.Prus. ape "stream," Lith. upé "stream;" Latv. upe "brook."
An ancient form of clock, used by several civilizations, consisting of a water container with a small hole from which the water slowly dripped. Time was reckoned by the level of the water remaining in the container.
Pang "a copper bason with a small hole in the bottom, for water in which it is placed to flow through, used for measuring time" used in Iran.