# 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: 1965 Search : ion
 compilation   هاتلش   hâtalešFr.: compilation   The act of compiling; something compiled.→ compile; → -tion. complex fraction   برخه‌ی ِ همتافت   barxe-ye hamtâftFr.: fraction complexe   A fraction in which the → numerator or → denominator, or both, contain fractions. For example (3/5)/(6/7). Also called → compound fraction.→ complex; → fraction. complex function   کریای ِ همتافت   karyâ-ye hamtâftFr.: fonction complexe   A function whose → variables are → complex numbers.→ complex; → function. complex population   پرینش ِ همتافت   porineš-e hamtâftFr.: population complexe   Same as → composite population.→ complex; → population. composite population   پرینش ِ همنهاده   porineš-e hamnehâdéFr.: population composite   A stellar population consisting of more than one → simple population. Also called complex population.→ composite; → population. composition   همنهش   hamneheš (#)Fr.: composition   1) General: The act or manner of composing; the result or product of composing. 2) Chemistry: The proportion of the elements of which a substance is made up. 3) Mechanics: The determination of a force whose effect is the same as that of two or more given forces acting simultaneously.Hamnehesh, from ham-, → com-, + neheš verbal noun from nehâdan "to put, place," → compose. compound fraction   برخه‌ی ِ همنات   barxe-ye hamnâtFr.: fraction composée   Same as → complex fraction.→ compound; → fraction. compound proposition   گزاره‌ی ِ همنات   gozâre-ye hamnâtFr.: proposition composée   A statement formed from simple statements by the use of words such as "and," "or," "not," "implies," or their corresponding symbols.→ compound; → proposition. comprehension   همنوتش   hamnutešFr.: compréhension   1) The ability to → comprehend something. 2) In logic, the sum of all the essential attributes which analysis can find in a concept or term. For example, the comprehension of the term man is rational animal; the → extension of the term man, is all men and women. Comprehension and extension are inversely proportional. The greater is the comprehension of a term, the less is its extension.Verbal noun of → comprehend. compression   تنجش   tanješ (#)Fr.: compression   The act or process of compressing; the state of being compressed.Verbal noun from → compress. compression factor   کروند ِ تنجش   karvand-e tanješFr.: facteur de compression   In thermodynamics, the quantity Z = pVm/RT, in which P is the gas pressure, Vm the molar volume, R the gas constant, and T the temperature. The compression factor is a measure of the deviation of a real gas from an ideal gas. For an ideal gas the compression factor is equal to 1.→ compression; → facteur. compression wave   موج ِ تنجش   mowj-e tanješFr.: onde de compression   A → longitudinal wave that compresses the → medium along the direction of → propagation, such as a → sound wave. Same as → compressional wave.→ compression; → wave. compressional   تنجشی   tanješi (#)Fr.: de compression   Of or relating to → compression.→ compression; → -al. compressional wave   موج ِ تنجشی   mowj-e tanješiFr.: onde de compression   An → elastic wave that travels through a → medium with the particles of the medium moving in the same direction as the wave propagation. The compressional wave is the wave that is primarily used in → seismic exploration. Also called P-wave, primary wave, pressure wave.→ compressional; → wave. Compton equation   هموگشِ کامپتون   hamugeš-e ComptonFr.: équation de Compton   Theoretical equation which gives the change in the photon wavelength due to the → Compton effect.→ Compton; → equation. Compton suppression   نهاوش ِ کامپتون   nehâveš-e ComptonFr.: suppression de Compton   In → gamma ray → spectroscopy, a technique to reduce the contribution of gamma rays generated by → Compton scattering.→ Compton; → suppression. Comptonization   کامپتونش   KâmptonešFr.: comptonisation   The change in the → spectrum of → electromagnetic radiation due to → scattering from → electrons. When → photons and electrons coexist in the same volume of space, their → collisions can → transfer energy from photons to electrons (→ Compton effect) or from electrons to photons (→ inverse Compton effect).Verbal noun of → Comptonize; → -tion. Comptonized emission   گسیل ِ کامپتونیده   gosil-e KâmptonidéFr.: émission comptonisée   Emission undergone → Comptonization.→ Comptonize; → emission. compulsion   وادارش، وادارکرد   vâdâreš, vâdârkardFr.: obligation   The action or state of forcing or being forced to do something; constraint (OxforddDctionaries.com).M.E., from O.Fr. compulsion, from L. compulsion-, noun of action from past-participle stem of compellere, → compel.Verbal noun from vâdâridan, vâdâr kardan, → compel. computation   حساب   hesâb (#)Fr.: calcul   The act, process, or method of calculating.Verbal noun of → compute.