An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 12948 Search : far
absorption curve
  خم ِ درشم   
xam-e daršam

Fr.: courbe d'absorption   

A graphic representation of the amount of radiant energy absorbed by a material as a function of the wavelength.

absorption; → curve.

absorption feature
  آرنگ ِ درشم   
ârang-e daršam

Fr.: motif d'absorption   

A dip in a spectrum indicating that light has been absorbed on the path from the emitting source to the observer. It may be a line, corresponding to a well-defined atomic or molecular transition, or a more complex feature whose physical origin is not necessarily understood.

absorption; → feature.

absorption line
  خط ِ درشمی   
xatt-e daršami

Fr.: raie d'absorption   

A dark line in the spectrum of a source produced by a lower temperature gas cloud lying between the source and the observer.

absorption; → line.

absorption nebula
  میغ ِ درشمی   
miq-e daršami

Fr.: nébuleuse par absorption, nébuleuse obscure   

A dark cloud of dust and gas that absorbs light from and impedes the view of background stars; dark nebula.

absorption; → nebula.

absorption spectrum
  بیناب ِ درشمی   
binâb-e daršami

Fr.: spectre d'absorption   

A spectrum of absorption lines or bands, produced when light from a hot source, itself producing a continuous spectrum, passes through a cooler gas.

absorption; → spectrum.

absorptivity
  درشما‌یی   
daršamâyi

Fr.: absorptivité   

The ratio of energy absorbed by a body to energy incident upon the same body.

Absorptivity, from absorptive adj. from → absorb + → -ity, suffix expressing state or condition.

Daršamâyi, from daršamâ quality adj. from daršam, present stem of daršamidan + -yi noun suffix.

absorptivity-emissivity ratio
  وابر ِ درشما‌یی-گسیلا‌یی   
vâbar-e daršamâyi/gosilâyi

Fr.: rapport absorptivité-émissivité   

For a spatial object, the ratio between its absorption of solar radiation and its infrared emission.

absorptivity; → emissivity; → ratio.

abstract
  ۱) آهنجیده؛ ۲) آهنجیده، چکیده   
1) âhanjidé (#); 2) âhanjidé (#), cekidé (#)

Fr.: 1) abstrait; 2) abstrait, sommaire   

1a) (adj.) A designation of what derives from → abstraction. Contrasted to → concrete.
1b) Dissociated from any concrete reality or specific instance.
2a) (n.) An abstract thing or state.
2b) A summary of a scientific article, document, speech, etc.

M.E., from L. abstractus "drawn away," p.p. of abstrahere "to draw away, withdraw," from abs- "away," from → ab- + trahere "to draw," → attract.

1) Âhanjidé, p.p. of âhanjidan, variants âhixtan, âxtan "to draw, pull, extract," → object.
2) Cekidé, literally "dropped, oozed out," from cekidan "to drop, distill, fall in small portions, as water," from cek, cekké "a drop, as water," probably an onomatopoeia.

abstract object
  بر‌آخت ِ آهنجیده   
barâxt-e âhanjidé

Fr.: objet abstrait   

An entity that does not exist in space or time and is not perceptible. Some examples are universals, sets, geometrical figures, and numbers.

abstract; → object.

abstraction
  آهنجش   
âhanješ (#)

Fr.: abstraction   

1) The mental process in which an element or quality is separated from a total object. Also the result of this process.
2) Chemistry: → abstraction reaction.

Verbal noun from → abstract; → -tion.

abstraction reaction
  واژیرش ِ آهنجش   
vâžireš-e âhanješ (#)

Fr.: réaction d'abstraction   

Chemistry: A bimolecular chemical reaction that involves removal of an atom or ion from a molecule. For example, hydrogen abstraction from methane: CH4 + Cl → CH3 + HCl.

abstraction; → reaction.

absurd
  یاوه   
yâvé (#)

Fr.: absurde   

Ridiculously senseless, illogical, or untrue; contrary to all reason. → reductio ad absurdum, → absurdity. See also → nonsense.

M.Fr. absurde, from L. absurdus "out of tune; foolish," from surdus "deaf, stupid, inaudible."

Yâvé, literally "unrelated speech," ultimately from *ui-vaka-, from *ui- "apart, away," → transit-, + *vaka- "word, speech," → word.

absurdity
  یاوگی   
yâvegi (#)

Fr.: absurdité   

The quality or state of being absurd; something that is absurd.

absurd + → -ity.

abundance
  فراوانی   
farâvâni (#)

Fr.: abondance   

1) The relative amount of a given → chemical element with respect to other elements.
2) The amount of an → isotope relative to other isotopes of the same element in a given sample. → overabundance; → underabundance.

M.E., from O.Fr. abundance, from L. abundantia "fullness," from abundare "to overflow," from L. → ab- "away" + undare "to surge," from unda "water, wave."

Farâvâni "abundance," from farâvân "abundant," from feré "much, more; increase; priority;" Mid.Pers. frêh "more, much;" O.Pers. fra- "before, forth;" Av. frā, fərrā "forth, forward;" PIE base *pro-; cf. L. pro "on behalf of, in place of, before, for;" Gk. pro- "before, in front of."

academic
  فرهنگستانیک   
farhangestânik

Fr.: académique   

1) Of or relating to a college, academy, school, or other educational institution, especially one for higher education.
2) Pertaining to areas of study that are not primarily vocational or applied, as the humanities or pure mathematics.
3) Theoretical or hypothetical; not practical, realistic, or directly useful (Dictionary.com).

academy; → -ic.

academician
  فرهنگستانوند   
farhangestânvand

Fr.: académicien   

A member of an association or institution for the advancement of arts, sciences, or letters.

From Fr. académicien, from académic-, → academic, + -ian a suffix forming adjectives and nouns.

Farhangestânvand, from farhangestân, → academy, + -vand a suffix forming adjectives and agent nouns, → actual.

academy
  فرهنگستان   
farhangestân (#)

Fr.: académie   

1) A group of authorities and leaders in a field of scholarship, art, etc., who are often permitted to dictate standards, prescribe methods, and criticize new ideas.
2) An association or institution for the advancement of art, literature, or science (Dictionary.com).

From Fr. Académie, from L. Academia, from Gk. Akademeia "grove of Akademos," a legendary Athenian of the Trojan War tales, whose estate, six stadia from Athens, was the enclosure where Plato taught his school.

Farhangestân, literally "site of culture and education," from farhang, → culture, + -estân suffix of place and time, → summer.

accelerate
  شتابیدن، شتافتن؛ شتاباندن   
šetâbidan (#), šetâftan (#); šetâbândan (#)

Fr.: accélérer   

(v.tr.) To increase the velocity of a body; to cause to undergo acceleration.
(v.intr.) To increase in speed.

Verbal form of → acceleration.

accelerated motion
  جنبش ِ شتابدار   
jonbeš-e šetâbdâr (#)

Fr.: mouvement accéléré   

The motion of an object subject to → acceleration. Opposite to → uniform motion.

Accelerated, from → accelerate; → motion.

Jonbeš, → motion; šetâbdâr "accelerated," from šetâbaccelerate + dâr "having, possessor" (from dâštan "to have, to possess," Mid.Pers. dâštan, O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind;" cf. Skt. dhr-, dharma- "law;" Gk. thronos "elevated seat, throne;" L. firmus "firm, stable;" Lith. daryti "to make;" PIE *dher- "to hold, support").

accelerating
  شتابنده   
šetâbandé (#)

Fr.: en accélération   

Moving or proceeding with → acceleration; e.g. → accelerating system; → accelerating Universe.

Verbal adj. from → accelerate.

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir cla clo clo clu coa coe coh col col col com com com com com com com com com con con con con con con con con con con con coo cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>