An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 13048 Search : far
emergent
  زمرچنده   
zomarcandé

Fr.: émergent   

1) Coming into being or notice.
2) Philo.: (of a property) arising as an effect of complex causes and not analyzable simply as the sum of their effects.
3) Ecology: Of or denoting a plant which is taller than the surrounding vegetation, especially a tall tree in a forest (OxfordDictionaries.com).

emerge; → -ent.

emergent ray
  پرتو ِ زمرچنده   
partow-e zomarcandé

Fr.: rayon émergent   

Optics: The → light ray leaving a → medium, in contrast to the → incident ray. If the medium has parallel sides, → angle of incidence and → angle of emergence

emergent; → ray.

emersion
  زمرچ   
zomarc

Fr.: émersion   

Astro.: Same as → egress.

emerge.

emigrant
  زموژنده، زموژگر   
zomužandé, zomužgar

Fr.: émigré   

A person who emigrates, as from his or her native country or region (Dictionary.com).

emigrate + -ant a suffix forming adjectives and nouns from verbs.

emigrate
  زموژیدن   
zomužidan

Fr.: émigrer   

To leave one country or region to settle in another; migrate.

ex-; → migrate.

emigration
  زموژش   
zomužeš

Fr.: émigration   

An act or instance of emigrating; a body of emigrants; emigrants collectively.

Verbal noun of → emigrate.

emission
  گسیل   
gosil (#)

Fr.: émission   

In an atom, a characteristic amount of energy radiated (as line emission) when an electron moves from an outer orbit to an inner orbit around the nucleus, corresponding to the lost energy of the electron.

From L. emissionem "a sending out," from emiss-, stem of emittere "send forth," from → ex- "out" + mittere "to send."

Gosil, variant gosi "sending away, dismission;" Mid.Pers. wisé "to despatch" (Parthian Mid.Pers. wsys- "to despatch;" Buddhist Mid.Pers. wsydy "to despatch;" Sogdian 'ns'yd- "to exhort"), from Proto-Iranian *vi-sid- "to despatch, send off," from prefix vi- "apart, away, out," + *sid- "to call."

emission band
  باند ِ گسیلی   
bând-e gosili

Fr.: bande d'émission   

In a spectrum, a combination of several closely spaced, often unresolved, → emission lines occurring across a limited range of wavelengths.

emission; → band.

emission coefficient
  همگر ِ گسیل   
hamgar-e gosil

Fr.: coefficient d'émission   

Electromagnetic flux emitted by a source per unit volume per unit time.

emission; → coefficient.

emission feature
  آرنگ ِ گسیل   
ârang-e gosil

Fr.: motif d'émission   

Any emission mark in the spectrum of a celestial object resulting from line formation or of unknown origin.

emission; → feature.

emission line
  خط ِ گسیلی   
xatt-e gosili (#)

Fr.: raie d'émission   

A bright line in the electromagnetic spectrum of a radiating substance caused by emission at a particular wavelength.

emission; → line.

emission measure
  اندازه‌ی ِ گسیل   
andâze-ye gosil

Fr.: mesure d'émission   

The product of the square of the electron density times the linear size of the emitting region (in parsecs).

emission; → measure.

emission nebula
  میغ ِ گسیلی   
miq-e gosil-i

Fr.: nébuleuse en émission   

An ionized nebula whose spectrum consists of → emission lines. → planetary nebula; → H II region.

emission; → nebula.

emission spectrum
  بیناب ِ گسیلی   
binâb-e gosili (#)

Fr.: spectre d'émission   

A spectrum consisting of emission lines, produced when the light does not undergo absorption between the source and the spectrograph.

emission; → spectrum.

emissive
  گسیلی، گسیلشی   
gosili, gosileši

Fr.: émissif   

1) Able to emit (radiation, light, or heat).
2) Pertaining to → emission.

Verbal adj. from → emit.

emissive power
  توان ِ گسیلی، ~ گسیلشی   
tavân-e gosili, ~ gosileši

Fr.: pouvoir émissif   

The energy emitted from unit surface area of body per second.

emissive; → power.

emissivity
  گسیلندگی   
gosilandegi (#)

Fr.: émissivité   

The ratio of energy radiated by a material to energy radiated by a black body at the same temperature.

emissive + → -ity.

emit
  گسیلیدن   
gosilidan (#)

Fr.: émettre   

To send forth (liquid, light, heat, sound, particles, etc.).

Verb of → emission.

Gosilidan, infinitive of gosil, → emission.

emitter
  گسیلنده   
gosilandé (#)

Fr.: émetteur   

Any device used to emit light, sound, electrons, or the like.

Agent noun of → emit.

emperor
  پرماتیار، امپراتور، شاهنشاه   
parmâtyâr, emperâtur, šâhanšâh

Fr.: empereur   

A monarch who rules or reigns over an empire.

M.E., from O.Fr. empereor "emperor, leader, ruler," from L. imperiatorem (nominative imperiator) "commander, emperor," from p.p. stem of → imperare "to command."

Parmâtyâr, from parmât, present stem of parmâtidan, → imperare, + suffix -yâr, as in šahryâr "sovereign, king," hušyâr "sober, cautious, intelligent," kušyâr "name of a physician; industrious" kâmyâr "happy, powerful," and baxtyâr "fortunate, rich."

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer AGB air Alf Alg all alp alt AM amo ana And ang ani ano Ant Ant apa apo app app Ara Arc ari Arr ash ass ast ast asy atm ato att aut ave axi Bab bal Bal bar bar bea Bek Bes bia Big bin bin bip biv bla bli blu Boh Bol Bos bou bra bri bro buo cal cal can cap car Car cat cat CCD Cen cen CH cha cha che Che chr cir cir cit 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 con Cop Cor cor cor cos cos cou cou Cow cre cri cro cry cur cya Cyg dan dar dat de- deb dec dec ded def deg del dem den dep des det dev dia dif dif dih dio Dir dis dis dis dis dis dis DO don dou dow dro dur dwa dyn Dys ear ebb ecl edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ esc eth Eur Eve exa exc exe exi exp exp ext ext ext fac fal far fed Fer fer fie fin fir fis fla flo flu fol for for fou fra fre Fre fro fut G-t gal gal gam gas Gau Gem gen geo geo geo gia Gli Gol gra gra gra gra gre gri gui H I Hag hal har hat He- hea hel Hel her Hes hie hig his hom hor hot Hub Hug hur hyd hyd hyg hyp ice ide ima Ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv Io ion iro isl iso iso Jac jet jud jur Kel Kep kil Klo Kui Lag lam Lap Lar lat law lea len lep Lib lig lim lin lin Lio lit loc LOF lon Lor low lum lun Lup Lyo mac mag mag mag mag mag mai man Mar mas mas mat Max mea mec Meg Mer Mer met met Met mic Mid Mil min Mir mit mod mod mol mon Mor mou mul mul mys nan Nat nau nec neo neu nev New NGC no nom non non nor not nuc nuc num nut obj obs obs occ ocu oft ome Oor ope opp opt opt orb ord ori ort osc out ove oxi pai pan par par par par pas pea pen per per per per Per per pha phi pho pho pho phy pio Pla pla pla pla Pla plu Poi pol pol pol poo pos pos pot pra pre pre pre pre pri pri pro pro pro pro pro Pro pro pse pul pur qua qua qua qua que rac rad rad rad rad rad rad ran rar ray rea rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot Rus Sac sal sat sca sca Sch sci Scu sec sec Sed sel Sel sen ser Sex Sha she sho sid sig sil sim sin siz sla Sma sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spi spr squ sta sta sta sta ste ste ste Sto Str str str sub sub suc sun sup sup sup sup sur swa syn syn tab tar tek tem ter tes the the the the Tho thr tid tim Tis Too Tor tra tra Tra tra tra tri tri tru Tul tur two Typ ult un- und uni uni unk upp Urc utt val var vec vel ver vib vio vir vis voi vor wan wat wav wax wea Wei whi Wil win WN9 wor X-r yel you zer zod > >>