# 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: 703
 mean term   ترم ِ میانی   tarm-e miyâniFr.: terme moyen   In → syllogism, the term which is common to both → premises and is excluded from the → conclusion.→ mean; → term. mean value theorem   فربین ِ ارزش ِ میانگین   farbin-e arzeš-e miyânginFr.: théorème des accroissements finis   1) If f(x) is a continuous function on the interval from a to b, then: ∫ f(x) dx = f(c)(b - a) (summed from a to b) for at least one point in that interval. 2) More generally, If f(x) and g(x) are continuous functions on the interval from a to b and g(x)≥ 0, then: ∫ f(x)g(x) dx = f(c) ∫ g(x) dx (both integrals summed from a to b).→ mean; → value; → theorem. meaning   چمار   cemâr (#)Fr.: sens, signification   The sense or significance of a word, sentence, symbol, etc. The study dealing with meanings is called → semantics. See also → semiotics.M.E., from mean; O.E. mænan "to mean, intend, signify" (cf. O.Fris. mena "to signify," O.S. menian "to intend, signify," M.Du. menen, Du. meenen, Ger. meinen "think, suppose"), related to Pers. maneš "disposition, temperament," mênidan "to think, consider," → idea; + → -ing.Cemâr, from cem or cim "meaning, signification;" Mid.Pers. cim "meaning, reason, cause;" ultimately from Proto-Ir. *cahmāt "wherefore?" cf. Skt. kasmāt "why, where from? whence?," kim "what? how? why?" + âr short form of âvar present stem of âvardan "to cause or produce; to bring," → production, as in bonâr, → cause, used also as a nuance suffix; see also the verb → mean. measure   ۱) اندازه؛ ۲) اندازه گرفتن   1) (n.) andâzé (#); 2) (v.) andâzé gereftan (#)Fr.: 1) mesure; 2) mesurer   1) A unit or standard of → measurement; the act or process of ascertaining the extent, dimensions, or quantity of something; measurement. 2) To use standard units to determine the magnitude, extent, size, etc. of something. The quantity obtained by such a process.From O.Fr. mesurer, from L.L. mensurare "to measure," from L. mensura "a measuring, a thing to measure by," from mensus, p.p. of metiri "to measure," → meter.1) Andâzé "measure," from Mid.Pers. andâzag, handâcak "measure," handâxtan, handâz- "to measure," Manichean Mid.Pers. hnds- "to measure," Proto-Iranian *hamdas-, from ham-, → com-, + *das- "to heap, amass;" cf. Ossetic dasun/dast "to heap up;" Arm. loanword dasel "to arrange (a crowd, people)," das "order, arrangement." 2) Andâzé gereftan, compound verb, literally "to take measure," from andâzé, as above, + gereftan "to take, seize" (Mid.Pers. griftan; Av./O.Pers. grab- "to take, seize;" cf. Skt. grah-, grabh- "to seize, take," graha "seizing, holding, perceiving;" M.L.G. grabben "to grab;" from P.Gmc. *grab; E. grab "to take or grasp suddenly;" PIE base *ghrebh- "to seize"). measurement   اندازه‌گیری   andâzegiri (#)Fr.: mesure   1) The act of measuring; a measured quantity. 2) The determination of the magnitude or amount of a quantity by comparison (direct or indirect) with the prototype standards of the system of units employed (IEEE Standard Dictionary of Electrical and Electronics Terms). → absolute measurement, → measurement uncertainty, → Roemer's measurement.Verbal noun of → measure. measurement uncertainty   ناتاشتیگی ِ اندازه‌گیری   nâtâštigi-ye andâzegiriFr.: incertitude de mesure   The interval within which lies the actually measured value of a physical quantity and the true value of the same physical quantity.→ measurement; uncertainty, from negation prefix un- + → certainty. mechanic   ساز-و-کارمند، ساز-و-کارگر   sâzokârmand, sâzokârgarFr.: mécanicien   A person who repairs and maintains machinery, motors, etc. (Dictionary.com). Same as → mechanician. mechanical   ساز-و-کاریک، ساز-و-کاروار   sâzokârik, sâzokârvârFr.: mécanique   1) Of, connected with, produced by → mechanics. 2) Like machines; automatic.→ mechanic; → -al. mechanical energy   کاروژ ِ مکانیکی   kâruž-e mekânikiFr.: énergie mécanique   The energy that is possessed by an object due to its motion or due to its position. It is equal to the sum of the → kinetic energy and → potential energy.→ mechanical; → energy. mechanical equilibrium   ترازمندی ِ مکانیکی   tarâzmandi-ye mekânikiFr.: équilibre mécanique   1) The state of a → rigid body if, as viewed from an → inertial frame of rest: 1) the → linear acceleration of its → center of mass is zero, and 2) its → angular acceleration about any axis fixed in this reference frame is zero. The center of mass may be moving with constant velocity and the body may be rotating about a fixed axis with constant angular velocity. 2) In → thermodynamics, the state of a system in which → pressure is the same every where with no other forces acting on the system except a uniform external pressure. mechanical equivalent of heat   هم‌ارز ِ مکانیکی ِ گرما   ham-arz-e mekâniki-ye garmâ (#)Fr.: équivalent mécanique de chaleur   Same as → Joule's constant.→ mechanical; → equivalent; → heat. mechanical mixing   آمیزش ِ مکانیکی   âmizeš-e mekânikiFr.: mélange mécanique   Any → mixing process that utilizes the → kinetic energy of relative → fluid motion.→ mechanical; → mixing. mechanical power   توان ِ مکانیکی   tavân-e mekâniki (#)Fr.: puissance mécanique   The → rate at which → work is done by a → force. In other words, → mechanical energy per unit time. Mechanical power is expressed in units of joules/sec (joules/s) or a watt (W) in the → mks system.→ mechanical; → power. mechanical system   راژمان ِ مکانیکی   râžmân-e mekânikiFr.: système mécanique   1) Any system of elements that interact according to the laws of → mechanics (as distinguished from chemical, electrical, thermal, etc.). 2) A collection of → machines functioning together to achieve the transfer of motion.→ mechanical; → system. mechanical wind   باد ِ مکانیکی   bâd-e mekânikiFr.: vent mécanique   A process in which matter is shed into a → Keplerian disk from a star rotating at the → critical velocity. The disk is probably destroyed by the pressure exerted by the stellar radiation and finally matter is lost. Such a process seems to occur around → Be stars which are stars rotating at or very near the critical limit (Meynet et al. 2007, arXiv:0709.2275).→ mechanical; → wind. mechanically   ساز-و-کاریکانه، ساز-و-کاروارانه   sâzokârikâné, sâzokârvârânéFr.: mécaniquement   1) In a mechanical manner; by a mechanism. 2) In a machine-like manner; without feeling.→ mechanical; → -ly. mechanician   ساز--و-کارمند، ساز-و-کار-گر   sâzokârmand, sâzokârgarFr.: mécanicien   A person skilled in constructing, working, or repairing machines; mechanic; machinist (Dictionary.com).From → mechanic + -ian. mechanics   مکانیک، ساز-و-کاریک   mekânik (#), sâzokârikFr.: mécanique   A branch of → physics that deals with motion and the → action of → forces on bodies. Mechanics may be divided into three areas, → kinematics, → dynamics, and → statics.From mechanic, from L. mechanicus, from Gk. mekhanikos "an engineer," also "inventive," literally "pertaining to machines" (adj.), from mekhane, → machine, + → -ics.Mekânik, loan from Fr. Sâzokârik, from sokâr, → mechanism, + -ik, → -ic. mechanism   ساز-و-کار   sâzokâr (#)Fr.: mécanisme   1) The structure or arrangement of parts of a machine or similar device, or of anything analogous. 2) The agency or means by which an effect is produced or a purpose is accomplished.From Mod.L. mechanismus, from Gk. mekhane, → machine.Sâzokâr, literally "making and working," from sâz "apparatus; (musical) instrument," from sâzidan, sâxtan "to build, make, fashion; to adapt, adjust, be fit" (from Mid.Pers. sâxtan, sâz-, Manichean Parthian s'c'dn "to prepare, to form;" Av. sak- "to understand, to mark," sâcaya- (causative) "to teach") + kâr "work," from kardan "to do, to make" (Mid.Pers. kardan; O.Pers./Av. kar- "to do, make, build;" Av. kərənaoiti "he makes;" cf. Skt. kr- "to do, to make," krnoti "he makes, he does," karoti "he makes, he does," karma "act, deed;" PIE base kwer- "to do, to make"). median   میانه   miyâné (#)Fr.: médiane   Statistics: The middle value in a sample sorted into ascending order. If the sample contains an even number of values, the median is defined as the mean of the middle two. Geometry: The line from a vertex of a triangle to the midpoint of the opposite side.From M.Fr. médian, from L. medianus "of the middle," from medius "middle;" akin to Pers. middle, → medium, → meddle; from PIE *medhyo-, from base *me- "between;" → medium.Miyâné from miyân, → middle, + -é nuance suffix.