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

## فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

### M. Heydari-Malayeri    -    Paris Observatory

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 decimal place   رقم پس از جداگر، ~ ~ ~ ممیز   raqam pas az jodâgar, ~ ~ ~ momayezFr.: décimale, chiffre après la virgule   The position of a digit to the right of a → decimal point written in decimal notation. In 0.032, for example, 0 is the first decimal place, 3 is the second decimal place, and 2 is the third decimal place.→ decimal; → place.Raqam, → digit; pas, → after; jodâgar, momayez, → decimal point. decimal point   جداگر، ممیز   jodâgar, momayez (#)Fr.: séparateur décimal, signe décimal   A symbol (usually a point or dot) used to separate the integer part from the fractional part of a → decimal number.→ decimal; → point.Jodâgar, → separator. Momayez, from Ar. mumaiyiz "distinguisher, discerner, separator." decimal representation   نمایش ِ دهدهی   nemâyeš-e dahdahiFr.: représentation décimale   A representation of a real number between 0 and 1, as written a = d1d2d3 ..., where each di is one of the digits 0, 1, 2, ..., 9. This means that a = d1 x 10-1 + d2 x 10-2 + d3 x 10-3+ ... decimal system   راژمان ِ دهدهی   râžmân-e dahdahiFr.: système décimal   same as → decimal number system.→ decimal; → number; → system. decimetric wave   موج ِ دسی‌متری   mowj-e desimetri (#)Fr.: onde décimétrique   An electromagnetic radio wave having wavelengths between 10 cm and 1m, corresponding to a frequency between 300 and 3,000 Mega Hertz. It is naturally emitted by various astronomical objects.Decimetric, from → deci- + from Fr. métrique, → metric; → wave.Mowj, → wave; desimetri, from décimétrique, as above. decision   واسون   vâsunFr.: décision   The act or process of deciding. → rule of decision.Verbal noun of → decide. decisive   واسونمند   vâsunmandFr.: décisif   Having the power or quality of deciding; putting an end to controversy; crucial or most important (Dictionary.com).→ decide; → -ive. declaim   وازوییدن   vâzuyidanFr.: déclamer   To speak aloud in an oratorical manner; make a formal speech (Dictionary.com).→ de-; → claim. declaration   روناگش   runâgešFr.: déclaration   The act of declaring; announcement. 2) Something that is announced or proclaimed.Verbal noun of → declare. declare   روناگیدن   runâgidanFr.: déclarer   1) To make known or state clearly, especially in explicit or formal terms. 2) To announce officially; proclaim (Dictionary.com).M.E. declaren, from O.Fr. declarer "explain, elucidate," from L. declarare "make clear, reveal, disclose, announce," from → de- intensive prefix + clarare "clarify," from clarus, → clear.From Kurd. (Sorani) rûnâk, runâg "clear, bright," rûn "bright, clear," rûn kirdin "to explain," variants of rowšanâ, rowšan, rušanâ, → bright, → day. declension   واکیله   vâkiléFr.: déclinaison   The → inflection of nouns, pronouns, or adjectives for case, number, and gender.M.E. declenson, declynson (with suffix later assimilated to -sion), from O.Fr. declinaison, from L. declinatio, → declination declination   واکیلش   vâkilešFr.: déclinaison   1) Angular distance (symbol δ) from the celestial equator. One of the coordinates, with → right ascension, that defines the position of a heavenly body in the equator system. Declination is measured positively (+) north or negatively (-) south of the celestial equator from 0° to 90°. 2) Angle between geographic North and magnetic North (symbol D).Verbal noun of → decline; → -tion. declination axis   آسه‌ی ِ واکیلش   âse-ye vâkilešFr.: axe de déclinaison   The axis to which the telescope tube is fastened in an → equatorial mounting.→ declination; → axis. declination circle   پرهون ِ واکیلش، دایره‌ی ِ ~   parhun-e vâkileš, dâyeré-ye ~Fr.: cercle de déclinaison   For a telescope with an → equatorial mounting, a graduated circle attached to the → declination axis that shows the → declination to which the telescope is pointing.→ declination; → circle. decline   ۱) واکیلیدن؛ ۲) واکیل   1) vâkilidan; 2) vâkilFr.: décliner, se décliner   1a) To bend down; slope downward; descend. 1b) Grammar: To → inflect according to the various cases of a noun, adjective, or pronoun. 2) The process of declining; a downward movement; gradual loss or deterioration.M.E. declinen, from O.Fr. decliner "to sink, decline, degenerate, turn aside," from declinare "to turn away, inflect," from → de- + clinare "to bend," cf. Gk. klinein "to cause to slope, slant, incline," Skt. sri- "to lean," O.Pers. θray-, Av. sray- "to lean," Mod.Pers. kil "bent, inclined, slant," PIE base *klei- "to lean, incline" from which is also derived (Ger. lehnen, E. lean).Vâkil, from prefix vâ- "away" + kil "bent, crooked, inclined" [Dehxodâ], Mid.Pers. xwahl "bent, crooked" (Mod.Pers. dialectal/colloquial variants kowleh, cowleh, cowl, caval, xohl, xohal, hol), cf. Skt. kûla- "slope, declivity;" PIE base *klei-, as above. → inclination decode   وارمزاندن، رمز‌برداشتن   vâramzândan, ramz bardâštanFr.: décoder   To convert encoded symbols so that they can be used by the computer or understood by a person. See also → encode and → decrypt.→ de-; → code.Vâramzidan, from vâ-, → de-. Ramz bardâštan, from ramz, → code, + bardâštan "to remove, to take," from bar- "on; up; upon; in; into; at; forth; with," → on-, + dâštan "to have; to hold; to posses," → property. decoder   وارمزانشگر   vâramzânešgarFr.: décodeur   An electronic device that converts audio or video signals into a different form that can be heard or seen correctly.→ decode; → -er. decoding   وارمزانش، رمزبرداری   vâramzâneš, ramz bardâriFr.: décodage   The process of translating data or a message from a code into the original language or form. See also → encoding and → decryption.→ decode; → -ing. decompose   واهمنهادن   vâhamnehâdanFr.: décomposer   Of a physical force or entity or chemical substance, to separate or break into constituent parts or elements.From → de- + → compose. decomposition   واهمنهش   vâhamnehešFr.: décomposition   The process or the state of breaking down a physical entity or an organic material.From → de- + → composition.