# An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

## فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

### M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 1358
 correcting plate   تیغه‌ی ِ ارشاینده، ~ ارشاگر   tiqe-ye aršâyandé, ~ aršâgarFr.: lame correctrice   A large glass plate placed at the entrance of a Schmidt telescope to correct for spherical aberration over the large field of view.→ correct; → plate. correction   ارشایش   aršâyešFr.: correction   1) The act or process of correcting. 2) A quantity added to a calculated or observed value to obtain the true value. 3) Something that is substituted or proposed for what is wrong or inaccurate.Noun form of → correct. corrector   ارشاینده، ~ ارشاگر   aršâyandé, ~ aršâgarFr.: correcteur   A thin lens-like optical piece which removes certain optical aberrations.→ correct + → -or. correlate   هم‌باز‌آنیدن   hambâzânidanFr.: corréler   1) To place in or bring into causal or mutual relation. 2) To have a mutual or reciprocal relation.From co-, → com-, + relate, → relationHambâzânidan , from ham-→ com- + bâzânidan→ relate. correlation   هم‌باز‌آنش   hambâzânešFr.: corrélation   General: The degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together; the state or relation of being correlated. Statistics: The strength of the linear dependence between two random variables.From M.Fr. corrélation, from cor- "together," → com- + → relation.Hambâzâneš , from ham-→ com- + bâzâneš→ relation. correlation coefficient   همگر ِ هم‌باز‌آنش   hamgar-e hambâzânešFr.: coefficient de corrélation   A number between -1 and 1 which measures the degree to which two variables are linearly related. correlator   هم‌باز‌آن‌گر   hambâzângarFr.: corrélateur   In radio astronomy a general term for → autocorrelator and → cross-correlator.→ correlate + → -or. correlogram   همبازانش‌نگار   hambâzâneš-negârFr.: corrélogramme   A plot showing a summary of correlation at different periods of time.Correlo-, from → correlation; → -gram. correspond   هم‌پتوازیدن   hampatvâzidanFr.: correspondre   To be in agreement, harmony, or conformity; to be similar or equivalent in character, quantity, origin, structure, or function.From O.Fr. Fr. correspondre, from M.L. correspondere from cor-, → com-, + respondere "to answer," → response.Hampatvâzidan, from ham-, → com-, + patvâz "response" [Mo'in], from Mid.Pers. patvâc "response," Av. paitivak- + -idan infinitive suffix. correspondence   هم‌پتوازی   hampatvâziFr.: correspondance   The act, fact, or state of agreeing or conforming.Verbal noun from → correspond. correspondence principle   پروز ِ همپتوازی   parvaz-e hampatvâziFr.: principe de correspondance   The principle first put forward by N. Bohr according to which the behavior of quantum mechanical laws reduce to classical laws in the limit of large quantum numbers. Corvus   کلاغ   Kalâq (#)Fr.: Corbeau   The Crow. A small but fairly conspicuous → constellation in the Southern Hemisphere lying south and west of → Virgo and east of → Crater.L. corvus "raven," Gk. korax "raven," korone "crow," PIE base *qer-, *qor-, imitative of harsh sounds, cf. Pers. kalâq, Skt. kâkola- "raven."Kalâq, Mid.Pers. warag, varâq "crow," Lori qelâ, Kordi qel, cf. Skt. kâkola- "raven," PIE base *qer-, *qor-, as above. cosecant   کوسکانت   kosekânt (#)Fr.: cosecante   The → secant of the complement of an arc or angle; abbreviation csc. If θ is an → acute angle of a → right triangle, csc θ = → hypotenuse/(opposite side).→ co-; → secante. cosine   کوسینوس   kosinus (#)Fr.: cosinus   A trigonometric function giving the ratio of the side adjacent to a given angle to the hypotenuse.Mod.L. complementi sinus, → com-; → sine. cosmic   کیهانی   keyhâni (#)Fr.: cosmique   Of or relating to the → Universe (instead of universal which may lend to confusion), to the → outer space.Adj. from → cosmos cosmic acceleration   شتاب ِ کیهانی   šetâb-e keyhâniFr.: accélération cosmique   → cosmic; → acceleration. Cosmic Background Explorer (COBE)   پویشگر ِ زمینه‌ی ِ کیهانی   puyešgar-e zamin-ye keyhâniFr.: Satellite COBE   NASA's satellite, designed to measure the diffuse infrared and → cosmic microwave background radiation from the early → Universe. It was launched on November 18, 1989 and carried three instruments: DIRBE (the Diffuse InfraRed Experiment), DMR (Differential Microwave Radiometers), and FIRAS (Far-InfraRed Absolute Spectrophotometer). The COBE observations showed that the cosmic microwave background spectrum matches that of a → blackbody of temperature 2.725 ± 0.002 K. COBE also found anisotropies in the cosmic microwave background at a level of a part in 100,000 (→ cosmic microwave background anisotropy). These tiny variations in the intensity of the CMB over the sky show how matter and energy was distributed when the Universe was still very young. Later, through a process still poorly understood, the early structures developed into galaxies, galaxy clusters, and the large scale structure that we see in the Universe today. Two of COBE's principal investigators, George Smoot and John Mather, received the Nobel Prize in Physics in 2006 for their work on the project.→ cosmic; → background; → explorer. cosmic background radiation   تابش ِ پس‌زمینه‌ی ِ کیهانی   tâbeš-e paszaminé-ye keyhâniFr.: rayonnement du fond cosmique   → cosmic; → background; → radiation. Cosmic Dark Age   عصر ِ تاریک ِ کیهانی   asr-e târik-e keyhâniFr.: âge sombre cosmique   The period of time in the early history of the Universe, between the → recombination era and the advent of the → first stars.→ cosmic; → dark; → age. cosmic defect   آک ِ کیهانی   âk-e keyhâniFr.: défaut cosmique   Topological irregularities in the → space-time  → continuum, caused by the abrupt cooling of the → early Universe shortly after the → Big Bang, as predicted by some → cosmological models. These regions of immensely high density might have been the seeds of → structure formation through → gravity. Same as → topological defect.→ cosmic; → defect.