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: 13176 Search : in
university
  دانشگاه   
dânešgâh (#)

Fr.: université   

An institution of higher education composed of several faculties for teaching and research and authorized to grant academic degrees.

M.E., from O.Fr. universitei, from M.L. universitatem (nominative. universitas), in L.L. "corporation, society," from L., "the whole, aggregate," from universus "whole, entire," → universe.

Dânešgâh, from dâneš, → science, + -gâh "place; time" (Mid.Pers. gâh, gâs "time;" O.Pers. gāθu-; Av. gātav-, gātu- "place, throne, spot;" cf. Skt. gâtu- "going, motion; free space for moving; place of abode;" PIE *gwem- "to go, come").

univocal
  یکواز   
yekvâz

Fr.: univoque   

1) Having one meaning only.
2) A word or term that has only one meaning

L.L. univocus, from L. → uni- + voc-, vox, → voice. "voice,"

univocity
  یکوازی   
yekvâzi

Fr.: monosémie   

The character of being → univocal. Same as → monosemy.

univocal; → ity.

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.

<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB 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 coo cor cor cor Cos cos cos cou cou cra cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl 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 inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc qua qua qua qua qui rad rad rad rad rad rad rai 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 rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl ura uti val var vec vel ver Ver vie vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>