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: 1244
comparison star
  ستاره‌ی ِ هم‌سنجش   
setâre-ye hamsanješ

Fr.: étoile de comparaison   

A non-variable star used to monitor the variations of another nearby star.

comparison; → star.

compass
  قطبنما   
qotbnemâ (#)

Fr.: compas magnétique   

A device for determining directions, as by means of a freely rotating → magnetic needle that indicates → magnetic north.

M.E. compas, from O.Fr. compas "circle, pair of compasses," from compasser "to go around, measure," from V.L. *compassare "to pace out," from L. → com- "together" + passus "a step."

Qotbnemâ, literally "pole indicator," from qotb, → pole, + nemâ "indicator, showing," from nemudan "to show," → display.

compass needle
  سوزن ِ قطبنما   
suzan-e qotbnemâ (#)

Fr.: aiguille de compas magnétique   

The needle in a → magnetic compass.

compass; → needle.

compasses
  پرگار   
pargâr (#)

Fr.: compas   

An instrument that consists of two arms, joined at the top, one arm of which serves as a stationary reference point or pivot, while the other describes a circle or is extended. It is used for measuring angles, transferring lengths, and drawing circumferences. Also pair of compasses.

compass.

Pargâr "a pair of compasses," from Proto-Ir. *pari-kar- "to draw around, to plough around," from *pari- "around, round about" (Mod.Pers. par-, pirâ-, cognate with Gk. peri-), → circum-, + *kar-, karš- "to draw (a furrow), till, plant" (Mod.Pers. kašidan "to draw," kâštan, kâridan "to plant"); Lori, Hamadâni kerr "line, scratch;" Laki keronen, Hamadâni kerândan "to pull along, drag;" Tâleši kernye; Tabari kərəš "to drag;" cf. Av. pairikara- "a furrow round about," Skt. parikara- "girdle, waist-band, zone."

compatibility
  سازگاری   
sâzgâri (#)

Fr.: compatibilité   

General: The fact or conditions of existing or working together.
Informatics: The ability of a software or peripheral device to function with another computer or computer system without modification.

Noun from → compatible.

compatible
  سازگار   
sâzgâr (#)

Fr.: compatible   

Capable of existing harmoniously with another or others.
Informatics: of a software or peripheral device, capable of working with another computer or computer system without modification.

M.Fr. compatible, from M.L. compatibilis, literally "sympathetic," from L.L. compati, from → com- "together" + pati "to suffer, undergo;" PIE base *pe(i)- "to hurt" (cf. Skt. pijati "reviles, scorns," Gk. pema "ruin, affliction," Av. pâman- "scab; skin disease") + -ible, → -able.

Sâzgâr variant sâzkâr "consonant, in accordance, agreeing," from sâz- present tense stem of sâzidan, sâxtan "to adapt, adjust, be fit; to build, make, fashion," Mid.Pers. sâxtan, sâz-, Manichean Parthian s'c'dn "to prepare, to form," Av. sak- "to understand, to mark," sâcaya- (causative) "to teach;" + agent suffix -gâr, variant -kâr, O.Pers. kara-, O.Pers./Av. kar- "to do, make, build," Av. kerenaoiti "makes," cf. Skt. kr- "to do, to make," krnoti "makes," karma "act, deed;" PIE base kwer- "to do, to make."

compensate
  پاهنگیدن   
pâhangidan

Fr.: compenser   

To reduce or balance the effect of something unwanted by exerting an opposite force or effect.

From L. compensatus, p.p. of compensare "to weigh one thing (against another)," thus, "to counterbalance," from → com- "with"+ pensare, frequentative of pendere "to weigh, to hang."

Pâhangidan, from pâhang (Dehxodâ) "that which is put in a balance scale to equalize the weights," from pâ- variant of pâd-, → counter-, + hangidan variant of sanjidan "to measure; compare, put in balance," → object.

compensator
  پاهنگنده   
pâhangandé

Fr.: compensateur   

One who, or that which, compensates.

compensate; → -or.

compensator plate
  تیغه‌ی ِ پاهنگنده   
tiqe-ye pâhangandé

Fr.: compensatrice   

A transparent plate inserted in one of the arms of an interferometer, in particular the → Michelson interferometer, to compensate for a longer → optical path in the other arm. Its function is to ensure that the beams transverse the same total thickness of glass in both arms of the interferometer. This is not essential for producing → interference fringes in monochromatic light. The compensator plate is of the same glass and the same thickness as the → beam splitter plate.

compensator; → plate.

compete
  پیشی‌جستن   
piši jostan (#)

Fr.: concourir, rivaliser   

To strive to outdo another for acknowledgment, a prize, supremacy, profit, etc.; engage in a contest (Dictionary.com).

From M.Fr. compéter, from L.L. competere "to strive in common," from → com- "together" + petere "to strive, go forward, seek," from PIE base *pet- "to fly, rush" (cf. Av. pat- " to fly, fall, rush," patarəta- "winged," Mid.Pers. patet "falls," opastan "to fall," Mod.Pers. oftâdan "to fall," Skt. patati "he flies, falls," pátra- "wing, feather, leaf," Gk. piptein "to fall," pterux "wing," O.E. feðer "feather," L. penna "feather, wing").

Piši jostan "to compete," literally "to strive to be in front position," from piši noun of piš "forward; in front; before," → pre-, + jostan, juy- "to strive for, seek," Parthian Mid.Pers. ywdy- "to strive for," Khotanese juv- "to fight," Av. yūd- (yaoda-) "to fight, struggle," yūdiieiti "fights," cf. Skt. yodh- "to fight," yúdh- "fight," Gk. hysmine "battle, fight," Lith. judus "belligerent."

competition
  پیشی‌جویی   
piši juyi (#)

Fr.: compétition   

1) The act of competing; rivalry for supremacy, a prize, etc. 2) A contest for some prize, honor, or advantage (Dictionary.com).

Verbal noun of → compete + → -tion.

competitive
  پیشی‌جویانه   
piši-juyâné

Fr.: compétitif   

1) Of, pertaining to, involving, or decided by competition.
2) Well suited for competition; having a feature that makes for successful competition.
3) Having a strong desire to compete or to succeed (Dictionary.com).

compete + → -ive.

competitive accretion model
  مدل ِ فربال ِ پیشی‌جویانه   
model-e farbâl-e piši-juyâné

Fr.: modèle d'accrétion compétitive   

A scenario for → massive star formation whereby developing → protostars in their natal → molecular clouds compete with each other to gather mass. The protostars → accrete mass with a rate which depends on their location within the protocluster. They use the same reservoir of gas to grow. Therefore those protostars nearest the center, where the potential well is deep, and gas densities are higher, have the highest → accretion rates. The competitive accretion model explains the observational fact that the most massive stars are generally found in cluster cores. It accounts also for the distribution of stellar masses. In this model the accretion process depends on the content of the cluster. In clusters where gas dominates the potential (e.g. at initial stages of cluster formation), the accretion process is better modeled by using the → tidal radius as the accretion radius. In contrast, when the stars dominate the cluster potential and are virialized, the accretion is better modeled by → Bondi-Hoyle accretion (Bonnell et al. 1997, MNRAS 285, 201; 2001, MNRAS 323, 785).

competitive; → accretion; → model..

competitor
  پیشی‌جو   
piši-ju

Fr.: compétiteur   

A person, team, company, etc., that competes; rival (Dictionary.com).

compete + → -or.

compilation
  هاتلش   
hâtaleš

Fr.: compilation   

The act of compiling; something compiled.

compile; → -tion.

compile
  هاتلیدن   
hâtalidan

Fr.: compiler   

1) To put together (documents, selections, or other materials) in one book or work.
2) Computers: To translate (a computer program) from a high-level language into another language, usually machine language, using a → compiler (Dictionary.com).

M.E., from O.Fr. compiler "compile, collect," from L. compilare "to plunder, rob," probably originally "bundle together, heap up;" from → com- "together" + pilare "to fix firmly, accumulate."

Hâtalidan, from hâ- variant of ham-, → com-, + tal, → pile, + -idan suffix of infinitives.

compiler
  هاتلگر   
hâtalgar

Fr.: compilateur   

A → software program that compiles program source code files into an executable program.

compile + → -er

complement
  اسپران   
osporân

Fr.: complément   

1) Math., logic: With reference to any set A, conceived as a subset of some larger set U, all the elements of U that are not contained in A.
2) Optics: A complementary color that, when combined to another, creates neutral gray.

From O.Fr. complement, from L. complementum "that which fills up or completes," from complere "fill up," → complete.

Osporân, from ospor present tense stem of osporidan "to → complete."

complementarity
  اسپرندگی   
osporandegi

Fr.: complémentarité   

The state or quality of being → complementary.

From → complementary + → -ity.

From osporandé, → complementary, + -gi, same as -i noun suffix.

complementarity principle
  پروز ِ اسپرندگی   
parvaz-e osporandegi

Fr.: principe de complémentarité   

Physical principle, put forward by Niels Bohr in 1928, that a complete knowledge of phenomena on atomic dimensions requires a description of both wave and particle properties.

complementarity; → principle.

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