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: 932
aeolipile
  ایولیپوله   
ayolipulé

Fr.: éolipyle   

A round vessel pivoted on a central axis that rotates by the force of internal steam escaping from two diametrically opposed narrow apertures. Aeolipile, first described by Hero of Alexandria (c. 10-70 AD), is an early example of → jet propulsion.

L aeolipila, from Gk aiolipyle, from Aiolon pyle, fr. aioli-, from Aiolos "god of wind," + pyle "gate."

aeon
  آیو   
âyu

Fr.: éon   

1) General: An indefinitely long period of time; an age.
2) Geology: A unit of geologic time equal to one billion years; US eon.

L. aeon, from Gk. aion "age, eternity;" akin to Av. āiiu- "duration, period, lifetime;" Skt. áyu- "life, longevity."

Âyu, from Av. āiiu- "duration, period, lifetime" (Sogd. āy "life, age"), as above.

aerodynamic
  هواتوانیک   
havâtavânik

Fr.: aérodynamique   

Of or pertaining to → aerodynamics.

aerodynamics.

aerodynamic force
  نیروی ِ هواتوانیک   
niru-ye havâtavânik

Fr.: force aérodynamique   

The force exerted by a gaseous fluid upon a body completely immersed in it caused by their relative motion. The components of aerodynamic force are: → lift and → drag.

aerodynamic; → force.

aerodynamics
  هواتوانیک   
havâtavânik

Fr.: aérodynamique   

The science that is concerned with the study of the → motion of → air and other gaseous → fluids and with the → forces acting on bodies moving through such fluids.

Aerodynamics, from Gk. aero-, → air, + → dynamics.

aerolite
  هواسنگ   
havâsang (#)

Fr.: aérolite   

A stony meteorite consisting of silicate minerals. This alternative name for a stony meteorite, is now largely obsolete.

Aerolite, from Gk. aero-, → air, + Gk. lithos "stone".

Havâsang from Persian havâ "air"; compare with Mid. Pers./Mod. Pers. vây "weather," from Av. vayah-, vaya- "weather, atmosphere," from va- "to blow". Cognate with Skt. va-, Gk. aemi "to blow" + sang, → stone.

aerology
  جوشناسی، جوشناخت   
javvšenâsi, javvšenâxt

Fr.: aérologie   

A subdivision of meteorology concerned with the total vertical extent of the atmosphere as opposed to the study of the atmosphere near Earth's surface.

Aerology from Gk. aero- "air" + Gk. logia "study of," from legein "to speak".

Javvšenâsi, from Ar. javv "air, atmosphere" + šenâsi "knowledge, knowing," from šenâxtan "to know," from Av./O.Pers. xšnâ "to learn, come to know, know," compare with Skt. jna "to know," Gk. gignoskein "to know, think, judge," L. gnoscere, noscere "to come to know," PIE *gno- "to know."

aeronautics
  هوانوردی   
havânavardi (#)

Fr.: aéronautique   

The science and technology concerned with designing, constructing, and operating machines capable of flying in the atmosphere.

From aeronautic, from Fr. aéronautique, from aéro-, from Gk. aer, → air, + nautique "of ships," from L. nauticus, from Gk. nautikos, from naus "ship" (cognate with Mod.Pers. nâv "ship;" Av./O.Pers. *nāv-, O.Pers. nāviyā- "fleet;" Skt. nau-, nava- "ship, boat;" Gk. naus, neus, L. navis; PIE *nāu- "ship").

Havânavardi, from havâ, → air, + navardi, verbal noun of navardidan "to travel, walk, pass by and over."

aeronomy
  وای‌شناسی، فرازاجوشناخت   
vâyšenâsi, farâzâjavvšenâxt

Fr.: aéronomie   

The study of the upper atmosphere, especially of regions of ionized gas.

From Gk. aer- "weather" + nomos "arranging, regulating," related to nemein "to deal out."

Vâyšenâsi from Mid. Pers./Mod. Pers. vây "weather," Av. vayah-, vaya- "weather, atmosphere," from va- "to blow;" cf. Skt. va-; Gk. aemi "to blow;" Av. vāta- "wind;" Skt. vata-; L. ventus, Mod. Pers. bâd, → wind; PIE *we- "to blow".

aerosol
  هوالو   
havâlu

Fr.: aérosol   

A suspension of fine solid or liquid particles in a gas.

Aerosol from aero "air" + sol(ution).

Havâlu from havâ "weather" + lu from → luyé, luyeš, → solution.

aesthetic
  زیباییک، زیبایی‌شناختی، زیبا   
zibâyik, zibâ-šenâxti, zibâ

Fr.: esthétique   

Relating to the philosophy of → aesthetics.

Adjective from → aesthetics.

aesthetics
  زیباییک، زیبایی‌شناسی   
zibâyik (#), zibâyi-šenâsi

Fr.: esthétique   

1) The branch of philosophy dealing with such notions as the beautiful, the ugly, the sublime, the comic, etc., as applicable to the fine arts, with a view to establishing the meaning and validity of critical judgments concerning works of art, and the principles underlying or justifying such judgments.
2) The study of the mind and emotions in relation to the sense of beauty (Dictionary.com).

From Ger. Ästhetisch or Fr. esthétique, both from Gk. aisthetikos "sensitive, perceptive," from aisthanesthai "to perceive, to feel."

Zibâyik, from zibâ "beautiful, elegant, adorned," → beauty, + -ik, → -ics.

affine
  کروَن   
karvan

Fr.: affine   

Math.: Of or pertaining to the geometry of → affine transformations. See also: → affine combination, → affine geometry, → affine set, → affinity.

From Fr., from L. affinis "bordering on; neighboring; related."

Karvan, literally "bordering on; possessing border (with); related," from (Bašgard) ker "border, boundary," (Fin Bandar Abbas) karaq "border, edge;" classical Pers. karân, kenâr "boundary, side, edge;" + -van suffix of possession, relation.

affine combination
  میازش ِ کروَن   
miyâzeš-e karvan

Fr.: combinaison affine   

A linear combination of vectors in which all the vector coefficients add up to one.

affine; → combination.

affine geometry
  هندسه‌ی ِ کروَن   
hendese-ye karvan

Fr.: géométrie affine   

The study of the properties which are → invariant under → affine transformations.

affine; → geometry.

affine set
  هنگرد ِ کروَن   
hangard-e karvan

Fr.: ensemble affine   

A set → if and only if (iff) for any two points in the → set, the line through them is contained in the set. In other words, for any two points in the set, their → affine combinations are in the set itself.

affine; → set.

affine transformation
  ترادیس ِ کروَن   
tarâdis-e karvan

Fr.: transformation affine   

Any → transformation preserving → collinearity.

affine; → transformation.

affinity
  کروَنی   
karvani

Fr.: affinité   

1) General: A relationship or resemblance.
2) Math.: The state, quality, or fact of being → affine.

affine; → -ity.

affix
  وند   
vand (#)

Fr.: affixe   

A linguistic element added to a word or root to produce a derived or inflected form. General term for → infix, → prefix, → suffix, and → circumfix.

From L. affixus "fastened to," p.p. of affigere "fasten to, attach," from af-, variant of → ad- "to" + figere "fasten."

Vand, variant band "tie, band," present stem of Mod.-Mid./Pers. bastan/vastan "to bind, shut;" Av./O.Pers. band- "to bind, fetter," banda- "band, tie;" cf. Skt. bandh- "to bind, tie, fasten;" PIE *bhendh- "to bind," cf. Ger. binden, E. bind.

afocal
  اکانون، بی‌کانون   
akânun, bikânun (#)

Fr.: afocal   

Describing a lens or optical system with a convergent power of zero, whose object and image points stretch to infinity. Thus, → afocal system.

Afocal, from → a- + → focal.

Akânun, from a- negation prefix, → a- + kânun, → focus. Bikânun, from bi- negation prefix + kânun, → focus.

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