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: 685
describe
  واوشتن، واویسیدن   
vâveštan, vâvisidan

Fr.: décrire   

1) General: To tell or represent in written or spoken words; give an account of.
2) Geometry: To draw or trace the outline of.

M.E. describen, from L. describere, from → de- + scribere "to write," from PIE *skreibh- (cf. Gk. skariphasthai "to scratch an outline, sketch;" Lett. skripat "scratch, write;" O.N. hrifa "scratch"); PIE base *sker- "cut, incise."

Vâveštan, vâvisidan (on the model of neveštan, nevisidan "to write"), from vâ-, → de-, + vešt-, vis- (see below) + -idan infinitive suffix. Vešt-, vis-, from Mid.Pers. bišt-, bis- (nibištan, nibes- "to write"), from O.Pers. pais- "to adorn, cut, engrave;" Av. paēs- "to paint, adorn," paēsa- "adornment;" Mid.Pers. pēsīdan "to adorn;" cf. Skt. piśáti "adorns; cuts;" Gk. poikilos "multicolored;" L. pingit "embroiders, paints;" O.C.S. pisati "to write;" O.H.G. fēh "multicolored;" Lith. piēšti "to draw, adorn;" PIE base *peik- "colored, speckled."

description
  واوشت، واویس   
vâvešt, vâvis

Fr.: description   

1) The act or method of describing.
2) Geometry: The act or process of describing a figure.

Verbal noun of → describe.

descriptive
  واوشتی، واویسنده   
vâvešti, vâvisandé

Fr.: descriptif   

Serving to describe; containing description.

describe; → -ive.

desert
  کویر   
kavir (#)

Fr.: désert   

1) An arid land where average annual precipitation is so low (usually taken as below 250 mm mean annual rainfall) that it will not adequately support vegetation, and where the potential rate of evaporation far exceeds precipitation.
2) Any place lacking in something; → brown dwarf desert.

From M.E., from O.Fr. desert, from L.L. desertum, literally "thing abandoned," from deserere "to abandon."

Kavir "salt and sour ground, where nothing grows; wilderness," of unknown origin.

design
  ۱) برسه؛ ۲) برسیدن   
1) barsé; 2) barsidan

Fr.: 1) dessin, plan, projet, conception; 2) dessiner, tracer le plan   

1a) An outline, sketch, or plan, as of the form and structure of a work of art, an edifice, or a machine to be executed or constructed.
1b) Organization or structure of formal elements in a work of art; composition.
2a) To prepare the preliminary sketch or the plans for (a work to be executed), especially to plan the form and structure of.
2b) To plan and fashion artistically or skillfully.
2c) To intend for a definite purpose (Dictionary.com).

M.E. designen, from M.Fr. desseign "purpose, project, design," from It. disegno, from disegnare "to mark out," from L. designare "mark out, devise, designate, appoint," from → de- "out" + signare "to mark," from signum "a mark, → sign."

Barsé, related to (Delijâni) barsi "to throw," variants baysi, vaesi, deresi; (Xonji, Gerâši) bar-, barressa "to fall down;" ultimately from Proto-Ir. *garH- "to throw;" cf. (+*ni-) Av. niγr- "to throw down;" Khotanese bīr- "to throw, sow;" Pers. garzin "a pointed arrow;" Pashto qoer "jump, leap," aqar "fitting an arrow to the bow-string ready to shoot;" cf. Skt. gar- "to raise a weapon;" Gk. ballein "to throw," → problem, blema "projectile;" PIE root *gwelH- "to throw" (Cheung 2007). Barsé is coined on the model of Ger. Entwurf "design; project" and entwerfen "to design," from werfen "to throw;" Pers. dar-andâxtan "to propound, to pose" (Hâfez: falak râ saxt beškâfim o tarhi now dar-andâzim); also Ar. tarh (طرح) "to throw."

designation
  نامگزینی   
nâmgozini (#)

Fr.: designation   

A distinctive name or title; appellation. → Bayer designation; → Flamsteed designation; → variable star designation.

From L. designatus, p.p. of designare "to mark out, choose, appoint," from → de- "out" + signare "to mark," from signum, → sign.

Nâmgozini, from nâm, → name, + gozini "choosing," from gozidan "to chose," → select.

designer
  برسه‌گر   
barsegar

Fr.: dessinateur, créateur, designer   

A person who devises or executes designs, especially one who creates forms, structures, and patterns, as for works of art or machines (Dictionary.com).

design; → -er.

desorb
  واشمیدن   
vâšamidan

Fr.: désorber   

Verbal form of → desorption.

Desorb, from → de- + -sorb, modeled on → absorb.

vâšamidan, from vâ-, → de-, + šamidan, modeled on baršamidan, → absorb.

desorption
  واشم   
vâšam

Fr.: désorption   

A physical or chemical process by which a substance that has been sorbed (adsorbed or absorbed) by a liquid or solid material is removed from the material. Reverse of → sorption. → absorption; → adsorption.

Verbal noun of → desorb.

despite
  پادکام   
pâdkâm

Fr.: malgré, en dépit de   

In spite of; notwithstanding.

M.E. despit, from O.Fr. despit, from L. despectus "a looking down on, scorn, contempt," from p.p. of despicere "to look down on, scorn," from → de- "down" + spicere/specere "to look at," → scope; the preposition is contraction of in despite of, a loan-translation of O.Fr. en despit de "in contempt of."

Pâdkâm, literally "against (one's) will or desire," from pâd- "against, contrary," → anti-, + kâm "desire, wish;" Mid.Pers. kâm "desire, wish;" cf. Skt. kāma- "desire, wish."

destructive interference
  اندرزنش ِ ویرانگر   
andarzaneš-e virângar

Fr.: interférence destructive   

An → interference process in which the → amplitude of the the amplitude of the resultant wave is less than that of either individual waves. See also → constructive interference.

Destructive, from O.Fr. destructif, from L.L. destructivus, from destruct-, p.p. stem of destruere, from → de- + struere "to build," → structure; → interference.

Andarzaneš, → interference; virângar "destructive," from virân, "destroyed, ruined."

detached system
  راژمان ِ جدا   
râžmân-e jodâ

Fr.: système détaché   

A binary system whose components are not in contact and in which no significant mass exchange is occurring.

P.p. of detach, from O.Fr. destachier (Fr. détacher), from des- "apart," + -tachier (as in atachier "to attach"); → system.

Râžmânsystem; jodâ "separate, distinct," Mid.Pers. jutâk (yutâk), jut (yut).

detail
  ۱) پازه؛ ۲) پازیدن   
1) pâzé; 2) pâzidan

Fr.: 1) détail; 2) détailler   

1) An individual or minute part; an item or → particular.
2) To relate or report with complete particulars; tell fully and distinctly (Dictionary.com).

From Fr. détail, from O.Fr. detail "small piece or quantity," literally "a cutting in pieces," from detaillier "to cut in pieces," from → de- "entirely" + taillier "to cut in pieces," from L. taliare "to split."

Pâzé, from Sogd. pâzê "portion, bit;" Kurd. pâž "part of a whole;" related to Mod.Pers. baxš "part, division," bâž "tribute, toll, impost;" ultimately from Proto-Ir. *baj- "to bestow, divide, have a share;" cf. Av. baž- (baxš-) "to divide, bestow, give a share;" O.Pers. bāji- "tribute, tax;" Mid.Pers. bâj, bâž "tribute, tax," baxtan "to distribute," baxt "luck, fate;" Skt. bhaj- "to share, distribute, apportion," Gk. phagein "to eat (to have a share of food)"; PIE base *bhag- "to share out, apportion;" → division.

detailed
  پازه‌مند   
pâzemand

Fr.: détaillé   

1) Having many details.
2) Thorough in the treatment of details (Dictionary.com).

Adjective from → detail.

detect
  آشکاریدن   
âškâridan (#)

Fr.: détecter   

To uncover the presence of, as of a sought-for nuclear particle or an astronomical object.
In radio communication, to extract the signal from its modulated carrier wave.

From M.E., from L. detectus, p.p. of detegere "uncover, disclose," from → de- reversal prefix + tegere "to cover."

škâridan "to reveal," infinitive of âškâr "manifest, clear," Mid.Pers. âškârak "manifest," from Proto-Iranian *âviškâra- from *âviš, Av. âviš "manifestly," + *kâra-, from kar- "to do, make," cf. Skt. avistya- "apparent, manifest."

detection
  آشکارش   
âškâreš (#)

Fr.: détection   

The act or state of detecting, → detect
Any operation on an electrical or electromagnetic signal to recover information from it.

M.E., from L.L. detection-, from detect(us), → detect, + -ion.

škâreš, from âškâr present-tense stem of âškâridandetect + verbal noun suffix.

detective quantum efficiency (DQE)
  کار‌آیی ِ کوانتومی ِ آشکارش   
kârâyi-ye kuântomi-ye âškâreš

Fr.: rendement quantique de détection   

The square of the ratio of the output → signal-to-noise (S/N) to the input S/N.

Detective, adj. of → detect; → quantum; → efficiency.

detectivity
  آشکارندگی   
âškârandegi

Fr.: détectivité   

A performance criterion for an electronic detector, reciprocal of the corresponding → noise-equivalent power (D = 1/NEP).

From detective, relating to → detect + → -ity.

detector
  آشکارگر   
âškârgar (#)

Fr.: détecteur   

A device whose main function is detection.
Any device or array of electronic sensors connected to a computer, used to detect the passage of a particle or photon; e.g. a → charge-coupled device (CCD).

L.L. detector, from deteg(ere), → detect, + -tor suffix forming agent noun.

škârgar, from âškâr present-tense stem of âškâridan "to detect" + -gar a suffix of agent nouns, from kar-, kardan "to do, to make" (Mid.Pers. kardan, O.Pers./Av. kar- "to do, make, build," Av. kərənaoiti "makes," cf. Skt. kr- "to do, to make," krnoti "makes," karma "act, deed;" PIE base kwer- "to do, to make").

determinant
  آترمگر   
âtarmgar

Fr.: déterminant   

An agent or factor that determines the nature of something or that fixes or conditions an outcome.
Math.: An algebraic expression used in the solution of systems of linear equations, which consists of the sum of products of elements, each with an appropriate algebraic sign, usually written in a square array.

From → determine + -ant suffix forming noun.

Âtarmgar, from âtarm present stem of âtarmidandetermine + -gar, → detector.

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