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: 626
isotropy
  ایزوگردی، هم‌سان‌گردی   
izogardi, hamsângardi (#)

Fr.: isotropie   

The property by which physical properties are equal along all directions. → anisotropy.

Isotropy, noun of → isotropic.

issue
  ۱) برونای؛ ۲) بروناییدن   
1) borunây; 2) borunâyidan

Fr.: issue, question, problème   

1a) A result or outcome of something.
1b) The action of flowing or coming out.
1c) Each of a regular series of publications.
1d) An important topic or problem for debate or discussion.
2) Formally send out or make known (OxfordDictionaries.com).

M.E., from O.Fr. issue "a way out, a going out, exit; final event," from L. exire "to go out, go forth; become public; flow, pour forth," from → ex- "out," + ire "to go,"

Borunây, literally "what comes out, exits," from borun, → out, + ây- present stem of âmadan "to come, arrive, become," → precession.

iterate
  ایتریدن   
itaridan

Fr.: itérer   

1) To utter or to do something over again or repeatedly. → repeat.
2) Math.: → iteration.

Iterate "to do again, repeat," back-formation from iteration, from L. iterationem (nom. iteratio) "repetition," noun of action from iterare "to do again, repeat," from iterum "again, for the second time;" cf. Skt. itara- "the other (of the two), another."

Itaridan, from L. iter(um), Skt. itar(a-), as above, and Pers. dialects Kâšâni (Voništun) târ "the other;" Kurd. tir "the other" + -idan Pers. infinitive suffix.

iteration
  ایترش   
itareš

Fr.: itération   

A computational process involving a succession of approximations, which consists of repeating the operation by inputting the outcome of each preceding operation to improve the final result until a desired accuracy is achieved. Compare → repetition.

Verbal noun of → iterate.

iterative method
  روش ِ ایترشی   
raveš-e itareši

Fr.: méthode itérative   

A method of computation in mathematics using → iteration.

Iterative, characterized by or involving → iteration; → method.

Izar (ε Boötis)
  ایزار   
Izâr

Fr.: Izar   

A bright giant star in the constellation → Boötes lying 210 light-years away. It is a close double consisting of K0 and A0 dwarfs of magnitudes 2.5 and 4.6.

From Ar. Al-Izâr (الازار) "a cloth worn round the loins and passed between the legs," Ar. rendering of the Herdsman's skirt; → Boötes.

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