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: 13009 Search : far
energy generation rate
  نرخ ِ آزانش ِ کاروژ   
nerx-e âzâneš-e kâruž

Fr.: taux de génération d'énergie   

Of a stellar → nuclear fusion, the energy produced per unit mass per unit time, usually denoted ε (erg g-1s-1). The general form of the energy generation equation is: ε = ε0ρλTν, where ε0, ρ, and λ are constants over some efficiently restricted range of → temperature T, → density ρ, and → chemical composition. The temperature exponent ν is about 4, 15, and 40 for → proton-proton chain, → CNO cycle, and → triple alpha process, respectively.

energy; → generation; → rate.

energy level
  تراز ِ کاروژ   
tarâz-e kâruž

Fr.: niveau d'énergie   

Any of the several discrete states of energy which a particle, atom, or molecule can adopt under conditions where the possible values are restricted by quantum mechanical laws.

energy; → level.

energy spectrum
  بیناب ِ کاروژ   
binâb-e kâruž

Fr.: spectre d'énergie   

Of cosmic rays, the plot representing the number of particles as a function of their energy.

energy; → spectrum.

energy state
  حالت ِ کاروژ   
hâlat-e kâruž

Fr.: état d'énergie   

Same as → energy level.

energy; → state.

energy transfer
  تراوژ ِ کاروژ   
tarâvaž-e kâruž

Fr.: transfert d'énergie   

The → conversion of one → form of energy into another, or the movement of energy from one place or system to another.

energy; → transfer.

energy-momentum tensor
  تانسور ِ کاروژ-جنباک   
tânsor-e kâruž-jonbâk

Fr.: tenseur énergie-quantité de mouvement   

A tensor (Tμν) related to the → Einstein tensor through → Einstein's field equations. The energy-momentum tensor depends upon the distribution of the → energy and → matter in the space.

energy; → momentum; → tensor.

engine
  موتور   
motor (#)

Fr.: moteur   

1) Any machine that converts energy, especially heat energy, into mechanical power or motion.
2) The part of a processor or software program that determines how the program manages and manipulates data. The term is most often used in relation to a specific task.

M.E. engin, from O.Fr. engin "skill, cleverness; war machine," from L. ingenium "inborn qualities, talent," from → in- "in" + gen-, root of gignere "to beget, produce;" cognate with Pers. zâdan "to bring forth, give birth;" → generate.

Motor, loanword from Fr. moteur, from L. motor "mover," from movere "to move."

engineer
  مهندس   
mohandes (#)

Fr.: ingénieur   

A person who designs, constructs, or works with engines or machines.

M.E. engin(e)our, from O.Fr. engigneor, from L.L. ingeniare, → engine.

Mohandes, from Ar. muhandis "measurer," from Pers. andâzé, → measure.

engineering
  مهندسی   
mohandesi (#)

Fr.: ingénierie   

The action, work, or profession of an engineer.

engineer + → -ing.

English mounting
  برنشاند ِ انگلیسی   
barnešând-e englisi

Fr.: monture anglaise   

A method of mounting a telescope in which the polar axis is supported at each end by two piers. The great defect of this type of mounting is its inability to observe the pole.

mounting.

enhance
  بلندیدن   
bolandidan

Fr.: rehausser, accroître   

To raise to a higher degree; intensify; magnify (Dictionary.com).

M.E. enhauncen, from Anglo-Fr. enhauncer, from O.Fr. enhaucier "make higher, make greater; raise in esteem," from V.L. *inaltiare, from L.L. inaltare "raise, exalt," from altare "make high," from altus "high."

Bolandidan, from boland "high," related to bâlâ "up, above, high, elevated, height," borz, "height, magnitude," → magnitude.

enhancement
  بلندش   
bolandeš

Fr.: rehaussement, accroissement   

An increase or improvement in value, extent, or quality.

Verbal noun of → enhance.

enigma
  چاچه   
câcé

Fr.: énigme   

A puzzling or inexplicable occurrence or situation. See also: → problem, → puzzle.

From L. aenigma "riddle," from Gk. ainigma "a dark saying, riddle," from ainissesthai "speak obscurely, speak in riddles," from ainos "tale, story; saying, proverb;" of unknown origin.

Câceh, from Baluci (Zâhedân) câcâk "riddle, puzzle;" cf. (Kermânšâhi) câvca "riddle, puzzle" (Fin-e Bandar-Abbâs) cencen "riddle;" maybe related to Choresmian c'tyk "riddle," from Proto-Ir. *caš- "to teach, to show;" Av. *caš- "to teach, to show" (Cheung 2007).

enigmatic
  چاچه‌ناک   
câcenâk

Fr.: énigmatique   

Resembling an enigma, or a puzzling occurrence, situation, statement, person, etc.; perplexing; mysterious (Dictionary.com).

enigma; → -ic.

Cušenâk, from cušé, → enigma, + -nâk adj. suffix.

Enlightenment
  عصر ِ روشنگری   
asr-e rowšangari (#)

Fr.: Siècle des Lumières   

An intellectual movement in Europe during the 17th and 18th centuries celebrating human reason and scientific thought as the instruments of progress and subjecting conventional ways of thinking to rigorous critique. The Enlightenment culminated with the writings of Jean-Jacques Rousseau (1712-1778) and the Encyclopédistes, the philosophy of Immanuel Kant (1724-1804), and the political ideals of the French and American Revolutions, while the precursor in science and philosophy included Francis Bacon (1561-1626), René Descartes (1596-1650), Isaac Newton (1643-1727), John Locke (1632-1704), and Thomas Hobbes (1588-1679).

From enlighten, from en- + → light + -en + → -ment.

Asr, → age; rowšangari, noun from rowšangar "enlightener," from rowšan "light, bright, luminous, splendid," cognate with L. lux, → bright, + -gar a suffix of agent nouns, → -or.

enrich
  پرداریدن، پردار کردن   
pordâridan, pordâr kardan

Fr.: enrichir   

To increase the → concentration or → abundance of a specified → component or → isotope in a material.

From en- a prefix forming verbs with a particular sense + → rich.

Pordâridan, pordâr kardan, infinitives from pordâr, → rich.

enriched
  پرداریده   
pordâridé

Fr.: enrichi   

Supplied with abundance of something. → enriched gas, → enriched uranium.

Past participle of → enrich.

enriched gas
  گاز ِ پرداریده   
gâz-e pordâridé

Fr.: gaz enrichi   

A gas, usually → interstellar, in which the → abundance of particular chemical or atomic species is higher than the expected values.

enriched; → gas.

enriched uranium
  اورانیوم ِ پرداریده   
urânium-e pordâridé

Fr.: uranium enrichi   

Uranium in which the → proportion of the → isotope U-235 has been increased (above the 0.7% value in natural uranium).

enriched; → uranium.

enrichment
  پردارش   
pordâreš

Fr.: enrichissement   

1) A process that changes the → isotopic ratio in a material. For example, for uranium the ratio of U-235 to U-238 may be increased by gaseous diffusion of uranium hexafluoride.
2) → chemical enrichment.

Verbal noun of → enrich.

<< < -es -iv -ti 21- a p abe abs abs acc acc acc act act ada adi ads aes Age Alb Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app app arb are ari art ass ast ast ast Atl ato ato Aug aut awa azi bac bal Bar Bar Bay bea Bep Bet BIC bij bin bio bir bla bla blu blu bol Boo bou Bq bre bri bub B[e cal cal can car car Cas cat cau cel cen Cer cha cha cha che chi CI cir cir cla cle clo clu co- cob 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 cov cra cri cro cry cum cur cyc d'A dar dat DC dea dec dec dec def def deh Del den dep des det deu dia dif dif dif dim dip Dir dis dis dis dis dis div dom dos dou dri Dum dus dyn dyn ear eas ecl Edd eff Ein eje ele ele ele ele eli emb emi Enc ene ens eph epo equ equ eru eth Eul eve evo exc exc exi exo exp exp ext ext Fab fai Fan fea fem fer fie fil fir fir fla flo flu foc For for fos fra fre fre fro fun g m Gal gal gal gas gau gel gen geo geo geo gho gla gno gra gra gra gra Gre Gre gro gyr had hal har Har HD hea hel hel Her Her Hic hig hip hol hor hos hov Hub hun hyd hyd Hyd hyp IC ide ill ima imp imp inc inc ind ind inf inf inf inf inj ins ins int int int int int int int int inv inv ion iro Isl iso iso Jac jet jud jur kel Kep kil Kle 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 Mei Mer 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 oxi pai pan par par par par pas pea pen per per per per Per pet pha Pho pho pho pho Pic Pis Pla pla pla pla Ple poa pol pol pol pol pop pos pos pow pra pre pre pre pri pri pri pro pro pro pro pro pro pro Pto pul puz 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 rep res res res res ret Rhe rid rig ris Roe Ros rot rub rut Sag sam sat sca sca Sch sci sea sec sec see sel sem sen ser Sgr sha shi sho sid sig sim sin Sir ske sli smo soc sol sol sol sol sol sou sou spa spe spe spe spe sph spi spl spu sta sta sta sta sta ste ste sti sto str Str sub sub sub sul sup sup sup sup sur sus sym syn sys Tam Tay tel ten Ter Tha the the the thi thr tib tid tim tok Tor tot tra tra tra tra Tri tri tro tru tur twi Typ ufo ult unc uni uni uni upl ura uti val var vec vel ver ver vil vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yea You zer zod > >>