An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



<< < -en ear eav ecl edg EHB Ein ela ele ele ele ele elv emi Enc ene ens eph EPR equ equ eru eth Eur evi exa exc exe exo exp exp ext ext > >>

Number of Results: 649
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.

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."

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.

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.



Fr.: rehausser, accroître   

To raise to a higher degree; intensify; magnify (

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.


Fr.: rehaussement, accroissement   

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

Verbal noun of → enhance.


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).


Fr.: énigmatique   

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

enigma; → -ic.

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

  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.

  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.


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.


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.

<< < -en ear eav ecl edg EHB Ein ela ele ele ele ele elv emi Enc ene ens eph EPR equ equ eru eth Eur evi exa exc exe exo exp exp ext ext > >>