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
excircle
  اسپرهون   
osparhun

Fr.: excercle   

For a → triangle with two sides extended in the direction opposite their common → vertex, a circle that lies outside the triangle and is tangent to the three sides (two of them extended). The center of the excircle, called the → excenter, is the point of intersection of the bisector of the interior angle and the bisector of the exterior angles at the other two vertices.

ex-; → circle.

excise
  اسوندن   
osundan

Fr.: exciser   

To cut out or off; to remove

M.E., from M.Fr. exciser, from L. excisus, p.p. of excidere "cut out, cut down, cut off," from → ex- + caedere "to cut," → precise.

Osunidan, from os-, → ex- + sun "cut," → precise.

excision
  اسونش   
osuneš

Fr.: excision   

The act of removal; an excising. The surgical removal of a foreign body or of tissue.

Verbal noun of → excise.

excitation
  بر انگیزش   
barangizeš (#)

Fr.: excitation   

1) The addition of → energy to an → atomic or → molecular system, → transferring it from its → ground state to an → excited state.
2) A property of an → emission nebula usually expressed by the ratio [O III] 5007Å/Hβ.

Verbal noun of → excite; → -tion.

excitation energy
  کاروژ ِ بر انگیزش   
kâruž-e barangizeš

Fr.: énergie d'excitation   

Amount of energy (usually measured in → electron-volts) required to bring an electron from its → ground state to a given → excited state.

excitation; → energy.

excitation potential
  توند ِ بر‌انگیزش   
tavand-e barangizeš

Fr.: potentiel d'excitation   

In quantum mechanics, the energy that is necessary to change a system from a → ground state to a given → excited state; also called excitation energy.

excitation; → potential.

excitation temperature
  دمای ِ بر‌‌انگیزش   
damâ-ye barangizeš

Fr.: température d'excitation   

Of a gas or plasma, the temperature deduced from the → populations of atomic → excited states, as expressed by the Boltzmann formula: Nu/Nl = (gu/gl) exp (-ΔE/kTex), where Nu and Nl are the upper level and lower level populations respectively, gu and gl the statistical weights, ΔE = hν the energy difference between the states, k is → Boltzmann's constant, and hPlanck's constant. The higher the energy of the occupied states, the higher the excitation temperature.

excitation; → temperature.

excite
  بر‌انگیختن   
barangixtan (#)

Fr.: exciter   

Verb of → excitation.

From L. excitare "to rouse, produce," freq. of exciere "to call forth, instigate," from → ex- "out" + ciere "to move, set in motion;" PIE base *kei- "to move to and fro" (cf. Av. šiyav-, š(ii)auu- "to move, go," šiyavati "goes," šyaoθna- "activity; action; doing, working;" O.Pers. šiyav- "to go forth, set," ašiyavam "I set forth;" Mod.Pers. šodan, šow- "to go; to become;" cf. Skt. cyu- "to move to and fro, shake about; to stir," cyávate "stirs himself, goes;" Gk. seuo "I start quickly after," kinein "to move;" Goth. haitan "call, be called;" O.E. hatan "command, call").

Barangixtan, from intensive prefix bar- "on, upon, up," → on-, + angixtan, angizidan "to excite, stimulate," from Mid.Pers. hangêxtan, hangêz- "to arouse, stimulate, stir up," from Proto-Iranian *hamgaiz-, from ham-, → com-, + *gaiz- "to disturb, stir, excite." The Mod.Pers. gij, giž "confused, astonished, dizzy" is from this stem (Cheung 2007).

excited atom
  اتم ِ بر‌انگیخته   
atom-e barangixté (#)

Fr.: atome excité   

An atom in which one or more of its bound electrons are at → energy levels higher than their normal level.

Excited p.p. of → excite; → atom.

excited state
  حالت ِ بر‌انگیخته   
hâlat-e barangixté (#)

Fr.: état excité   

The condition of a particle or system of particles (especially an atom, nucleus, molecule) after absorbing energy from outside and transiting to a higher → energy level than that of its → ground state. Excited states are transitory as they lose energy through emissions or collisions and return to ground state.

Excited, p.p. of → excite; → state.

exciting star
  ستاره‌ی ِ بر انگیزنده   
setâre-ye barangizandé

Fr.: étoile excitatrice   

A star associated with an interstellar ionized nebula (→ H II region or → planetary nebula) whose energetic → ultraviolet, → photons → ionize the nebula.

Exciting, verbal adj. of → excite; → star.

exclude
  سکلاندن   
sokolândan

Fr.: exclure   

To shut or keep out; to hinder from being included, considered, or accepted. → exclusion.

From L. excludere "to keep out, shut out, hinder," from → ex- "out" + claudere "to close, shut," → include.

Sokolândan, from so-, variant os-, → ex-, + kolândan "to shut," → include.

exclusion
  سکلان   
sokolân

Fr.: exclusion   

An act or instance of excluding; the state of being excluded.

Verbal noun of → exclude.

exclusion principle
  پروز ِ سکلان   
parvaz-e sokolân

Fr.: principe d'exclusion   

In → quantum mechanics, the principle according to which no → two → fermions of the same kind may simultaneously → occupy the same → quantum state. Also known as → Pauli exclusion principle.

exclusion; → principle.

exclusive
  سکلاننده، سکلان‌مند   
sokolânandé, sokolânmand

Fr.: exclusif   

Excluding or having power to exclude; excluding all else; rejecting other considerations, possibilities, etc.

Adj. from → exclude.

excretion
  اُسبال   
osbâl

Fr.: excrétion   

A process in which an astronomical body loses mass mainly in the direction of its → equatorial regions, as opposed to → accretion.

From L. → ex- + crescere "to grow," → accretion.

excretion disk
  گرده‌ی ِ اُسبال   
gerde-ye osbâl

Fr.: disque d'excrétion   

An expanding → equatorial → disk or → torus of material ejected by a star. The phenomenon may result from a stellar → merger or an increase in its rate of → rotation or → stellar winds. Contrasted with → accretion disk.

excretion; → disk.

excursion
  زچار   
zocâr

Fr.: excursion   

1) A short trip or outing to some place, usually for a special purpose and with the intention of a prompt return.
2) Physics: The displacement of a body or a point from a mean position or neutral value, as in an oscillation (Dictionary.com). → geomagnetic excursion.

From L. excursion- "a running forth, expedition," figuratively "an outset, opening," from excurrere "to run out," from → ex- "out" + currere "to run," → current.

Zocâr, literally "wander out, " from zo- "out," → ex-, + câr "to come and go, wander," related to car-, caridan "to psature, graze;" (Karingân) cârumé "excursion, walking around," (Sorxé) câqâle, (Sangesar, Semnân) ceqala "excursion;" Av. car- "to come and go, wander;" cf. Skt. car- "to move, walk, go;" Gk. pelomai "I move;" L. colere "to till, cultivate;" PIE root *kwelH- "to move, turn, wander."

executable
  زکاردنی   
zokârdani

Fr.: exécutable   

1) Computers: Describing a computer program that is able to be run. → executable program.
2) Computer: A file containing a program that will run when it is opened. → executable file.

execute; → -able.

executable file
  پرونده‌ی ِ زکاردنی   
parvande-ye zokârdani

Fr.: fichier exécutable   

A type of binary file designed to be directly executed by a computer system. → executable program.

executable; → file.

<< < -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 > >>