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: 1290
Syrtis Major
  سیرتیس مایور   
Sirtis Mâyor

Fr.: Syrtis Major   

A dark triangular plateau near the Martian equator, located in the boundary between the northern lowlands and southern highlands of Mars. Syrtis Major is centered near at 8.4°N 69.5°E, extends some 1,500 km north from the planet's equator, and spans 1,000 from west to east.

From the classical Roman name Syrtis maior "the Gulf of Sidra" on the coast of Cyrenaica (today Libya)

system
  راژمان   
râžmân

Fr.: système   

1a) An assemblage or combination of things or parts forming a complex or unitary whole.
1b) An ordered and comprehensive assemblage of facts, principles, doctrines, or the like in a particular field of knowledge or thought (Dictionary.com).
2) Physics: An aggregate composed of physical bodies which we isolate, in our mind, from the region external to it in order to analyze physical situations. Everything outside the system which has a direct bearing on its behavior is called the → environment.
3) Astro.: An entity composed of a number of astronomical objects associated and acting together according to certain natural laws.
4) Computers: A system consisting of components (a combination of the hardware, software, and firmware) which are connected together in order to accomplish a specific function or set of functions.

From L.L. systema "an arrangement, a whole consisting of several parts," from Gk. systema "arrangement, organized whole," from sy-, variant of syn- "together" + ste- variant stem of histanai "to cause to stand" (from PIE base *sta- "to stand;" cf. Pers. ist, istâdan "to stand;" Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; set;" Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand") + -ma nominal suffix denoting result of action.

Râžmân, from raž, from Av. rāz- "to direct, put in line, set," rasman- "the lines or files of the army," razan "rule, order" (variants raj, râž, rak, râk, rezg (Lori), radé, râdé "line, rule, row," rasté, râsté "row, a market with regular ranges of shops;" ris, risé "straight"), related to râst "right, true; just, upright, straight;" Mid.Pers. râst "true, straight, direct," rây-, râyênitan "to arrange;" Sogdian rəšt "right;" O.Pers. rāsta- "straight, true," rās- "to be right, straight, true;" cf. Skt. raj- "to direct, stretch," rjuyant- "walking straight;" Gk. orektos "stretched out;" L. regere "to lead straight, guide, rule," p.p. rectus "right, straight;" PIE base *reg- "move in a straight line," hence, "to direct, rule;" + -mân verbal noun suffix used with present and past stems, as in zâymân, câymân, sâxtemân, goftemân.

system manager
  گنارگر ِ راژمان   
gonârgar-e râžmân

Fr.: administrateur de système   

A person in charge of the configuration and administration of a multi-user computer system inside a network.

system; → manager.

system noise
  نوفه‌ی ِ راژمان   
nufe-ye râžmân

Fr.: bruit de système   

The noise in a radio telescope, composed of the receiver noise and the sky noise.

system; → noise.

systematic
  راژمان‌مند   
râžmânmand

Fr.: systématique   

Having, showing, or involving a system, method, or plan.

L.L., from Gk. systematikos; → system; → -ic.

Râžmânvâr, râžmânmand, from râžmân, → system, + -mand suffix of possession.

systematic error
  ایرنگ ِ راژمان‌مند   
irang-e râžmânmand

Fr.: erreur systématique   

The error that is constant in a series of repetitions of the same experiment or observation. Usually, systematic error is defined as the expected value of the overall error. opposite of → random error.

systematic; → error.

systematics
  راژمان‌مندیک   
râžmânmandik

Fr.: systématique, taxinomie   

Biology: The science that deals with the systematic naming and classification of all kinds of organisms.

From → systematic + → -ics.

systemic
  راژمانی   
râžmâni

Fr.: systémique   

Relating to or affecting a system as a whole.

system; → -ic.

systems theory
  نگره‌ی ِ راژمان   
negare-ye râžmân

Fr.: théorie des systèmes   

An interdisciplinary field of science which deals with the nature of complex systems in nature, society, and science, and studies complex parts of reality as systems.

system; → theory.

syzygy
  یوجان   
yujân

Fr.: syzygie   

The alignment of three or more celestial bodies in the same gravitational system along a nearly straight line.
Conjunction or opposition of a heavenly body with the Sun.

From L.L. syzygia, from Gk. syzygia "yoke, pair, union of two, conjunction," from syzygein "to yoke together," from → syn- "together" + zygon "yoke," cognate with Pers. yuq, jug "yoke," as below.

Yujân from yuj "yoke," variants yuq, juh (Mid.Pers. jug, ayoxtan "to join, yoke;" Av. yaog- "to yoke, put to; to join, unite;" cf. Skt. yugam "yoke;" Hittite yugan "yoke;" Gk. zygon "yoke," as above, zeugnyanai "to join, unite;" L. jungere "to join," O.C.S. igo, O.Welsh iou, Lith. jungas O.E. geoc. PIE base *yeug- "to join") + -ân suffix of place and time.

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