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: 1965 Search : ion
repetition
  بازگرش   
bâzgarš

Fr.: répétition   

The act of repeating; repeated action, performance, production, or presentation.

From L. repetitionem (nominative repetitio), from repetitus, p.p. of repetere "to do or say again."

Bâzgarš from bâz-, → re-, + garš "turn, time (indicating multiplication, as in three times, four times, etc.," aquivalent to Fr. fois), related to gez in hargez "ever, always; never," garz in hagarz "never." Garš has numerous variants in Pers. dialects, all denoting "turn, times" (بار، دفعه), e.g. [Mo'in]: gazak; Qâyeni: gaš; Hamadâni, Qomi: kaš; Lori: gey, gel; Semnâni, Sorxeyi, Lâsgardi, Sangesari: gazak; Gilaki: garaš; Tâleši: gara, vera, verxa; Tabari: gal, gel; Tâti Karingâni: kat; Kermâni: karet; related to Av. hakərət "once," from *ha(m)-kar-, the second element meaning "to do;" Pers; kardan; cf. Skt. sakrt "once, repeated; ever; never."

representation
  نمایش، نمایندگی   
nemâyeš (#), nemâyandegi (#)

Fr.: représentation   

1) The act or the action of representing; the state of being represented.
2) The expression by some term, character, symbol, or the like.

M.E. representacion, from L. repraesentation, from repraesentatus p.p. of repraesentare, from → re- + praesentare "to show, give, present for approval," from praesens, from praeesse "to be before others, to be present," from prae- "before," → pre- + esse "to be," cognate with Pers. ast "is," astan, hastan "to be."

Nemâyeš, nemâyandegi, from nemudan "to show, demonstrate, exhibit," → display

reproduction
  بازفر‌آورش   
bâzfarâvareš

Fr.: reproduction   

1) The act of reproducing or the condition or process of being reproduced.
2) Something reproduced, especially in the faithfulness of its resemblance to the form and elements of the original.
3) Biology: Any of various processes, either sexual or asexual, by which an animal or plant produces one or more individuals similar to itself (TheFreeDictionary.com).

reproduce; → -tion.

repulsion
  وازنش   
vâzaneš (#)

Fr.: répulsion   

Physics: The force that acts between bodies of like electric charge or magnetic polarity, tending to separate them.

Verbal noun of → repulse.

resignation
  واگامش   
vâgâmeš

Fr.: démision   

The act of resigning.

Verbal noun from → resign.

resolution
  واگشود   
vâgošud

Fr.: résolution   

1) The degree to which an → optical system renders visible separate parts of an object. Also known as → angular resolution and → spatial resolution. See also → spectral resolution.
2) The time interval between successive discernible signals. → temporal resolution.

Verbal noun of → resolve.

resolution of a force
  واگشود ِ نیرو   
vâgošud-e niru

Fr.: résolution de force   

Finding the → components of a → force which act in specified → directions.

resolution; → force.

resonance region neutron
  نوترون ِ ناحیه‌ی ِ باز‌آوایی   
notron-e nâhiye-ye bâzâvâyi

Fr.: neutron dans la région de résonance   

A neutron with an energy between 1 eV and 0.01 MeV.

resonance; → region; → neutron.

resonant reaction
  واژیرش ِ باز‌آوا   
vâžireš-e bâzâvâ

Fr.: réaction résonnante   

A nuclear reaction whose probability is enhanced at an energy corresponding to an energy level of one of the nuclei. → resonance capture.

Resonant, verbal adj. of → resonate; → reaction.

resonant relaxation
  واهلش ِ باز‌آوا   
vâheleš-e bâzâvâ

Fr.: relaxation résonnante   

A process whereby stellar orbit relaxation can be dramatically enhanced in orbits in a nearly Keplerian star cluster close to a → massive black hole (MBH). This process can modify the angular momentum distribution and affect the interaction rates of the stars with the MBH more efficiently than non-resonant relaxation. In the standard relaxation picture, each encounter is random and uncorrelated, so stars undergo a random walk. Relaxation is driven by the diffusion of energy which then leads to angular momentum transfer. However, in a stellar cluster around a MBH, each star will be on a Keplerian orbit, which is a fixed ellipse in space. The orbits of two nearby stars will thus exert correlated torques on one another, which can lead to a direct resonant evolution of the angular momentum. Since resonant relaxation increases the rate of angular momentum scattering, stars reach highly eccentric orbits more rapidly where they can become → extreme mass ratio inspiral (EMRI)s (Rauch, K.P., Tremaine, S., 1996, arXiv:astro-ph/9603018; Gair J.R. et al. 2013, Living Rev. Relativity, 16, (2013), 7 http://www.livingreviews.org/lrr-2013-7, doi:10.12942/lrr-2013-7).

resonant; → relaxation.

resorption
  بازشم   
bâzšam

Fr.: résorption   

The absorption of a material by a medium or system after having been released from absorption by that same medium or system. → absorption; → desorption; → sorption.

Verbal noun of resorb, from L. resorbere, from → re- + sorbere "to swallow, suck up."

Bâzšam, from bâz "again, back," → re-, + šam, variant of zšâm, as in âšâm, âšâmidan "to drink, to sip;" Av. šam- "to drink, sip, swallow;" Skt. cam, camati "to sip, dirink, lick up, absorb."

restoration
  بازسازی، بازگردانش   
bâzsâzi (#), bâzgardâneš

Fr.: restauration   

The act or process of restoring such as → image restoration.

Verbal noun of → restore.

restriction
  فرودارش   
forudâreš

Fr.: restriction   

The act of restricting, the state or the condition of being restricted.

Verbal noun, → restrict + → -tion.

resultant acceleration
  شتاب ِ بر‌آیند   
šetâb-e barâyand (#)

Fr.: accélération résultante   

An acceleration that results from the vector addition of two or more distinct accelerations.

resultant; → acceleration.

retardation
  دیرکرد   
dirkard (#)

Fr.: retard   

The act of retarding or state of being retarded. → retardation plate.

Verbal noun of → retard.

retardation plate
  تیغه‌ی ِ دیرکرد   
tiqe-ye dirkard

Fr.: lame à retard   

Same as → wave plate.

retardation; → plate.

retrograde motion
  جنبش ِ پسرو   
jonbeš-e pasrow

Fr.: mouvement rétrograde   

The orbital motion or rotation of a solar system body in a clockwise direction (East to West) when viewed from the north pole of the ecliptic. It is a motion opposed to the → direct motion of the great majority of solar system bodies.

retrograde; → motion.

revision
  بازنگری   
bâznegari (#)

Fr.: révision   

the act or work of revising. a process of revising. a revised form or version, as of a book.

Verbal noun of → revise.

revocation
  واوچ   
vâvac

Fr.: révocation   

The act of revoking; annulment.

Verbal noun of → revoke.

revolution
  گردش   
gardeš (#)

Fr.: révolution   

The movement of a celestial body which is in orbit around another. It is often measured as the → orbital period.

Verbal noun of → revolve.

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