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: 13048 Search : far
unknown
  نادانست   
nâdânest

Fr.: inconnu   

Math.: A → variable or → function whose → value is to be found.

un-, + known, p.p. of → know.

unmute
  واخباندن   
vâxabândan

Fr.: activer le son   

To remove a mute from (a musical instrument).

un-; → mute.

unordinary
  ناشونیک   
nâšunik

Fr.: non ordinaire   

Uncommon, unusual. → extraordinary.

un-; → ordinary.

unpolarized light
  نور ِ ناقطبیده   
nur-e nâqotbidé (#)

Fr.: lumière non polarisée   

A light whose electric vector of vibration is randomly oriented. Light is an → electromagnetic wave possessing an electric vector and an associated orthogonal magnetic vector. Both vectors are → transverse to the axis of propagation. In unpolarized light the electric and magnetic vibrations occur in all possible planes. Ordinary light emitted by the Sun, by a living room lamp, or by a candle flame is unpolarized light. → polarization.

un-; → polarized light.

unqualified
  ناچوناییده، ناچونامند   
nâcunâyid, nâcunâmand

Fr.: non qualifié   

Not qualified; not fit; lacking requisite qualifications (Dictionary.com).

un-; → qualified.

unreddened star
  ستاره‌ی ِ ناسرخیده   
setâre-ye nâsorxidé

Fr.: étoile non rougie   

A star whose light is not affected by→ interstellar absorption. → reddening

un-; → reddened star.

unresolved
  ناواگشوده   
nâvâgošudé

Fr.: non résolu   

Describing an image whose constituent or elementary parts are not resolved. → unresolved source.

un- + → resolved.

unresolved source
  خن ِ ناواگشوده   
xan-e nâvâgošudé

Fr.: source non résolue   

A source of radiation whose angular size is too small for details of its structure to be revealed.

unresolved; → source.

unsharp image
  وینه‌ی ِ ناتیگ، تصویر ِ ~   
vine-ye nâtig, tasvir-e ~

Fr.: image floue   

An image in which finer details are not visible. → blurred image

un-; → sharp image.

unsharp masking
  ماسک‌زد ِ ناتیگ   
mâskzad-e nâtig

Fr.: masque floue   

A process for amplifying fine details in a registered image. Generally speaking, the process consists of creating a mask which contains larger scale features of the image and then subtracting the mask from the initial image.

un-; → sharp; → masking.

unstable
  ناپایدار   
nâpâydâr (#)

Fr.: instable   

Not → stable, as in → unstable atom, → unstable equilibrium.

un-; → stable.

unstable atom
  اتم ِ ناپایدار   
atom-e nâpâydâr (#)

Fr.: atome instable   

An atom whose nuclei → decay by → radioactivity.

unstable; → atom.

unstable equilibrium
  ترازمندی ِ ناپایدار   
tarâzmandi-ye nâpâydâr

Fr.: équilibre instable   

An equilibrium state of a system in which if a small perturbation away from equilibrium is applied, the system will move farther away from equilibrium state. For example, mechanical equilibrium in which the potential energy is a maximum, as a sphere placed on top of a hill. Mathematically, if the second derivative of the energy with respect to the coordinate of interest is negative, the system is in an unstable equilibrium. → stable equilibrium.

unstable; → equilibrium.

Unukalhai
  عنق‌الحیّه   
Onoqelhayyé (#)

Fr.: Unukalhai   

The brightest star as well as the Alpha star of → Serpens, thus also known as α Serpentis. It is a third magnitude (V = 2.65) an orange giant of spectral type K2 with a radius 15 times as large as that of the Sun and a surface temperature of 4300 kelvins. It is approximately 73.2 light years from Earth. Unukalhai is in fact a triple star system. The second star (α Serpentis B) is 58 arcseconds from the primary and has a magnitude of 11.8. The third star (α Serpentis C), 13th magnitude, lies 2.3 arcminutes from A. Other designations: Cor Serpentis, HR 5854, HD 140573.

From Ar. 'unuq al-hayyah (عنق‌الحیه) "Neck of the Snake," from 'unuq "neck" + al-hayyah "snake."

up
  بالا   
bâlâ (#)

Fr.: en haut   

To, toward, or in a more elevated position.

M.E. up(pe) (adv.), O.E. up(p) "to a higher position;" cf. O.Frisian up, O.S. up, M.Du. up, op, O.N. upp; O.H.G. uf; (Ger. auf), Goth. iup.

Bâlâ "up, above, high, elevated, height" (related to boland "high," borz "height, magnitude" (it occurs also in the name of the mountain chain Alborz), Lori dialect berg "hill, mountain;" Mid.Pers. buland "high;" O.Pers. baršan- "height;" Av. barəz- "high, mount," barezan- "height;" cf. Skt. bhrant- "high;" L. fortis "strong" (Fr. & E. force); O.E. burg, burh "castle, fortified place;" Ger. Burg "castle;" Goth. baurgs "city;" E. burg, borough; Fr. bourgeois, bourgeoisie, faubourg); PIE base *bhergh- "high."

upgrade
  ۱) فراز-پداک؛ ۲) فراز-پداکیدن   
1) farâz-padâk; 2) farâz-padâkidan

Fr.: 1) rampe, montée; 2) promouvoir, revaloriser   

1a) An incline going up in the direction of movement.
1b) An increase or improvement.
1c) A new version, improved model, etc.
2a) To promote to a higher grade or rank.
2b) To improve or enhance the quality or value of (Dictionary.com).

up; → grade.

uplift
  بالامد   
bâlâmad

Fr.: surrection   

The process by which an area of Earth's crust slowly rises either due to increasing upward force applied from below or decreasing downward force (weight) from above.

From → up + → lift.

Bâlâmad, literally "coming up," from bâlâ, → up, + âmad past stem of âmadan, → come.

upload
  ۱) بارگذاشتن؛ ۲) بارگذاری   
1) bârgozâštan; 2) bârgozâri (#)

Fr.: 1) mettre en ligne; 2) mise en ligne   

To send data from one's computer to another computer. See also: → loading, → download.

up-; → load.

Bârgozâštan, literally "to put load," from bâr, → load, + gozâštan "to put, to place," → passage.

upper
  بالا، زبرین   
bâlâ (#), zabarin (#)

Fr.: supérieur   

Higher, as in place, position, pitch, or in a scale.

Upper, from → up, → hyper-.

Bâlâ, → up; zabarin, → superior.

upper arm
  بازو   
bâzu (#)

Fr.: haut du bras   

The part of the → arm between the → shoulder and the → elbow.

upper; → arm.

Bâzu "arm," from Mid.Pers. bâzûk "arm;" Av. bāzu- "arm;" Mod.Pers. bâhu "stick, staff; arm;" cf. Skt. bāhu- "arm, forearm;" Gk. pechys "forearm, arm, ell;" O.H.G. buog "shoulder;" Ger. Bug "shoulder;" Du. boeg; O.E. bôg, bôh "shoulder, bough;" E. bough " a branch of a tree;" PIE *bhaghu- "arm").

<< < -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 > >>