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submarine zir-daryâ-yi (#) Fr.: sous-marin (Adj.) Located, occurring, operating, or living beneath the surface of the → sea. |
submarine ridge ruk-e zir-daryâ-yi Fr.: Geology: A long, steep elevation of the deep sea floor. |
submarine spring cešme-ye zir-daryâ-yi Fr.: source sous-marine Hydrology: A freshwater spring that emerges off the seashore. |
submerge 1) marcidan; 2) marcândan Fr.: submerger 1) To sink or plunge under water or beneath the surface of any enveloping medium. From L. submergere, from → sub- + mergere "to dip, immerse;" probably by rhotacism from PIE *mezg- "to dip, plunge;" cf. Skt. majj- "to sink in water;" Lith. mazgoju "to wash." Marcidan, from Av. mraoc- "to float, submerge;" cf. Skt. mroc/mloc "to go down, set (of the Sun), to disappear, to hide;" Kurd., Laki, Nahâvandi, Bovir-Ahmadi mala- "swim," Kurd. melâna "ship, boat," melaq "wave" may be related to this Av. form. |
submillimeter zir-milimetri Fr.: sub-millimétrique Of or pertaining to scales smaller than millimeter. → sub-; → millimeter. |
submillimeter astronomy axtaršenâsi-ye zir-milimetri Fr.: astronomie sub-millimétrique The study of astronomical objects with → submillimeter waves. As with millimeter-wave astronomy, this part of the spectrum is rich in lines emitted by interstellar molecules and dust. → submillimeter; → astronomy. |
submillimeter galaxy (SMG) kahkešân-e zir-milimetri Fr.: galaxie sub-millimétrique A member of an extremely luminous population of → high-redshift galaxies which are detected in → submillimeter waves (→ flux density at 850 μm ≥ 3 - 5 mJy). SMGs are powered primarily by star formation rather than an → active galactic nucleus (AGN). Because of their high → dust content, these galaxies emit almost all of their luminosity in the infrared, with a → bolometric luminosity ranging from 1012-1013 → solar luminosities. As such, SMGs resemble → ultraluminous infrared galaxies (ULIRGs), which are almost exclusively → merging galaxies. Indeed, many observations support a → merger origin for SMGs (see, e.g. C.C. Hayward et al. 2011 and references therein, astro-ph/1101.0002). → submillimeter; → galaxy. |
submillimeter radiation tâbeš-e zir-milimetri Fr.: rayonnement sub-millimétrique That part of the → electromagnetic radiation with a → wavelength beyond 300 → microns. → submillimeter; → radiation. |
submillimeter wave mowj-e zir-milimetri Fr.: onde sub-millimétrique An electromagnetic wave having wavelengths less than one millimeter (frequencies greater than 300 gigahertz). → millimeter; → wave. |
submission dar-sepord Fr.: soumission An act or instance of submitting. The condition of having submitted. → submit Verbal noun of → submit. |
submit dar-sepordan Fr.: soumettre To present for the approval, consideration, or decision of another or others. For example, to submit a research paper for publication, to submit an observing proposal. From L. submittere "to yield, lower, let down, put under, reduce," from → sub- "under" + mittere "to let go, send." Dar sepordan, dar sepârdan "to yield, surrender, give in," from dar "in, into" (→ in-) + sepordan/sepârdan "to give in charge, entrust to, deposit with;" ultimately Proto-Iranian *spar- "to hand over, entrust." |
subproof zirâvin Fr.: sous preuve A proof that occurs within the context of a larger proof |
subrelativistic zir-bazânigimand Fr.: subrelativiste Describing a system or situation for which the → Lorentz factor, γ, is much smaller than 1. See also → ultrarelativistic. → ultra- + → relativistic |
subscript zirnevešt (#) Fr.: indice inférieur 1) Math.: An → index (a digit or symbol)
written under and to the right of a letter for representing terms in
a → sequence or → series,
or indicating variable components in → tensor analysis.
→ superscript. From L. subscriptus, p.p. of subscribere "to write underneath," from → sub- "underneath" + scribere "to write," → describe. Zirnevešt, from zir-, → sub-, + nevešt "written," from neveštan, nevis- "to write;" Mid.Pers. nibištan, nibes- "to write;" Av./O.Pers. nī- "down; in, into," → ni- (PIE), + paēs- "to paint; to adorn," paēsa- "adornment" (Mid.Pers. pēsīdan "to adorn"); O.Pers. pais- "to adorn, cut, engrave" (Mod.Pers. pisé "variegated"); cf. Skt. piśáti "adorns; cuts;" Gk. poikilos "multicolored;" L. pingit "embroiders, paints;" O.C.S. pisati "to write;" O.H.G. fēh "multicolored;" Lith. piēšti "to draw, adorn;" PIE base *peik- "colored, speckled." |
subset zir-hangard Fr.: sous-ensemble A set of elements wholly contained in another set. If each element of a set A belongs to a set B, A is called a subset of B, written A ⊂ B or B ⊃ A and read "A is contained in B" or "B contains A" respectively. |
subshell zir-pusté Fr.: sous couche A set of electrons with the same angular momentum quantum number, denote l. The number of electrons permitted in a subshell is equal to 2l + 1. |
subsolar point noqte-ye zir-xoršidi Fr.: point subsolaire The point of the surface of a celestial body (including the Earth) at which the Sun is directly overhead at a particular time. |
subsonic zir-sedâyi Fr.: subsonique Describing a speed that is less than the speed of sound in the medium concerned. → supersonic. |
subsonic flow tacân-e zir-sedâyi Fr.: écoulement subsonique A flow in which the velocity of the constituting particles never exceeds that of sound in the same fluid. Also called subcritical flow. |
substance zirist Fr.: substance 1) That of which a thing consists; physical matter or material. M.E., from O.Fr. substance, from L. substantia "being, essence, material," from substans, pr.p. of substare "to stand under or be present," from → sub- "up to, under" + stare "to stand," cognate with Pers. istâdan "to stand," as below. Zirist, literally "to stand under," from zir-, → sub-, + ist "to stand; to be standing, "from istâdan "to stand;" Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; set;" Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand." |
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