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: 696
explicit function
  کریای ِ استاهی   
karyâ-ye ostâhi

Fr.: fonction explicite   

The most usual form of a function in which the dependent variable (written on the left hand side of the Same as → equality sign) is expressed directly in terms of independent variables written on the left (on the right hand side). See also → implicit function.

explicit; → function.

explode
  اسکفتن، اسکفتیدن   
oskaftan, oskaftidan

Fr.: exploser   

Verbal form of → explosion.

From L. explodere "drive out or off by clapping," originally theatrical, "to drive an actor off the stage by making noise," from → ex- "out" + plaudere "to clap, beat," of uncertain origin.

Oskaftidan, from os-, → ex- + kaftidan "to burst; to split," variants kaftan, kâftan "to split; to dig," Parthian Mid.Pers. q'f- "to split;" Sogdian "to spli;" Chorasmian kf- "to split, be split;" Proto-Iranian *kap-, *kaf- "to split."

exploration
  پویش   
puyeš (#)

Fr.: exploration   

1) An act or instance of exploring or investigating; examination.
2. The investigation of unknown regions.
3) The process of searching for minerals by means of geological studies.
4) Medicine: An examination or investigation for diagnostic purposes, usually involving endoscopy or a surgical procedure.

Verbal noun of → explore.

explore
  پوییدن   
puyidan (#)

Fr.: explorer   

1) To travel to or in a place for the purpose of discovery.
2) To make a careful investigation or study of something.

From L. explorare "investigate, search out;" said to be originally a hunters' term meaning "set up a loud cry," from → ex- "out" + plorare "to cry."

Puyidan, originally "to run, trot; wander," from Mid.Pers. pôy-, pwd- "to run;" cf. Gk. speudein "to hasten;" Lith. spudinti.

explorer
  پوینده، پویشگر   
puyandé, puyešgar (#)

Fr.: explorateur   

A person or thing that explores.

Agent noun of → explore.

explosion
  اسکفت   
oskaft

Fr.: explosion   

The sudden and violent release of mechanical, chemical, or nuclear energy from a confined space which creates a heat wave that travels at → subsonic speeds. → detonation; → deflagration; → implosion.

Verbal noun of → explode.

explosive
  ۱) اسکفتاک؛ ۲) اسکفتی، اسکفتنده   
1) oskaftâk; 2) oskafti, oskaftandé

Fr.: explosif   

1) (n.) A chemical or compound that causes a sudden, almost instantaneous release of pressure, gas, heat, and light when subjected to sudden shock, pressure, high temperature, or applied potential.
2) (adj.) Pertaining to or of the nature of an → explosion.

From explos(ion), → explosion + → -ive.

Oskaftâk, from oskaft-, stem of oskaftan, → explode, + -âk noun suffix.

explosive nucleosynthesis
  هسته اندایش ِ اسکفتی   
hasté andâyeš-e oskafti

Fr.: nucléosynthèse explosive   

The explosive processes that are believed to occur in supernovae. Explosive carbon burning occurs at a temperature of about 2 × 109 degrees and produces the nuclei from neon to silicon. Explosive oxygen burning occurs near 4 × 109 degrees and produces nuclei between silicon and calcium in atomic weight.At higher temperatures, still heavier nuclei are produced.

explosive; → nucleosynthesis.

explosivity
  اسکفتندگی   
oskaftandegi

Fr.: explosivité   

1) The state or quality of being explosive.
2) A measure of the extent to which a material is explosive.

explosive; → -ity.

exponent
  نما   
nemâ (#)

Fr.: exposant   

Math.: A symbol or number placed above and after another symbol or number (called the base) to denote the power to which the latter is to be raised. Examples: n in the expresseion an; 3 in the expression 23.

From L. exponentem, pr.p. of exponere "put forth, explain," from → ex- "forth" + ponere "to put, to place."

Nemâ, agent noun of nemudan "to show, display," from Mid.Pers. nimūdan, from ne- "down; into;" O.Pers./Av. ni- "down; into," → ni-, + mun, Av. māy- "to measure," → display.

exponential
  نمایی   
nemâyi (#)

Fr.: exponentiel   

Of or expressed by a mathematical → exponent. → exponential curve, → exponential equation, → exponential function.

exponent + -ial, variant of → -al.

exponential curve
  خم ِ نمایی   
xam-e nemâyi (#)

Fr.: courbe exponentielle   

A curve that represents an → exponential function.

exponential; → curve.

exponential equation
  هموگش ِ نمایی   
hamugeš-e nemâyi

Fr.: équation exponentielle   

An equation in which unknowns appear as exponents. Examples: 23x + 1 = 32.

exponential; → equation.

exponential function
  کریای ِ نمایی   
karyâ-ye nemâyi

Fr.: fonction exponentielle   

A function in the form of y = bx defined for every → real number x, with positive base b > 1.

exponential; → function.

exponentially
  نماییوار   
nemâyivâr

Fr.: exponentiellement   

In an exponential manner.

exponential; → -ly.

export
  ۱) اسبرتیدن؛ ۲) اسبرت   
1) osbartidan; osbart

Fr.: export   

1a) To ship (commodities) to other countries or places for sale, exchange, etc.
1b) Computers: To save (documents, data, etc.) in a → format usable by another → software program.
2) The act of exporting (Dictionary.com).

From L. exportare "to carry out, bring out; send away,," from → ex- "away" + portare "carry."

Osbart "carrying away," from os-, → ex-, + bart variant of bord, bordan "to carry" (such as in dialects of Varzaneh barte, Nâin barte, Xonsâr birt, Esfahân bärten); Mid.Pers. burdan; O.Pers./Av. bar- "to bear, carry," barəθre "to bear;" Skt. bharati "he carries;" Gk. pherein; L. fero "to carry;" PIE base *bher- "to carry."

expose
  ۱، ۲) اسنهادن؛ ۲) نور دادن   
1, 2) osnehâdan; 2) nur dâdan (#)

Fr.: exposer   

1) To reveal, make known, make visible.
2) In imaging, to subject, as to the action of light, or other electromagnetic radiations.

M.E. exposen, from O.Fr. exposer "lay open, set forth," from L. exponere "set forth, lay open, exhibit," with contamination from poser "to lay, place" (→ position). doublet of expound.

1) Osnehâdan, from os-, → ex-, + nehâdan "to put, place," → position.
2) nur dâdan, from nur, → light + dâdan "to give," Mid.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives;" cf. Skt. dadáti "he gives;" Gk. didomi "I give;" L. dare "to give, offer;" PIE base *do- "to give."

exposé
  اسنه   
osneh

Fr.: exposé   

A formal exposition of facts.

From Fr. exposé, p.p. of exposer, "to → expose."

Noun from osnehâdan, → expose.

exposition
  اسنهش   
osneheš

Fr.: exposition   

1) The act of setting forth information or a viewpoint.
2) Public exhibition or show.

Verbal noun of → expose.

exposure
  ۱) اسنهش؛ ۲) نورداد   
1) osneheš; 2) nurdâd

Fr.: pose, exposition   

1) The act of exposing; the fact or state of being exposed, → expose.
2) In optics, the total radiant energy incident on a surface per unit area. It is equal to the integral over time of the radiant flux density.

Verbal noun of → expose.


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