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: 13176 Search : far
color transformation
  ترادیس ِ رنگ   
tarâdis-e rang

Fr.: transformation de couleur   

Empirical mathematical transformation applied to the observed magnitudes in order to convert them into a standard system, or into a different system.

color; → transformation.

color-color diagram
  نمودار ِ رنگ-رنگ   
nemudâr-e rang-rang (#)

Fr.: diagramme couleur-couleur   

A diagram based on two photometric colors usually representing the same class of astronomical objects.

color; → diagram.

color-color plot
  نمودار ِ رنگ-رنگ   
nemudâr-e rang-rang (#)

Fr.: diagramme couleur-couleur   

Fr.: diagramme couleur-couleur

Same as → color-color diagram.

color-luminosity diagram
  نمودار ِ رنگ-تابندگی   
nemudâr-e rang-tâbandegi

Fr.: diagramme couleur-luminosité   

A form of → Hertzsprung-Russell diagram in which the luminosity is the vertical axis and the → color index the horizontal axis.

color; → luminosity, → diagram.

color-magnitude diagram
  نمودار ِ رنگ-برز   
nemudâr-e rang-borz

Fr.: diagramme couleur-magnitude   

A form of → Hertzsprung-Russell diagram in which the visual absolute magnitude Mv is the vertical axis and the → color index the horizontal axis.

color; → magnitude, → diagram.

colorimetry
  رنگ سنجی   
rangsanji (#)

Fr.: colorimétrie   

The measurement and definition of unknown colors in terms of standard colors.

color; → -metry.

Columba
  کبوتر   
Kabutar (#)

Fr.: Colombe   

The Dove. A small → constellation in the Southern Hemisphere just south to → Canis Major and → Lepus. Abbreviation: Col; genitive: Columbae.

L. columba "dove."

Kabutar "pigeon," Mid.Pers. kabôtar, from kabôd "grey-blue; pigeon," cf. Skt. kapota- "a dove, pigeon; the grey color of a pigeon."

column
  ستون   
sotun (#)

Fr.: colonne   

CCD detector: Series of pixels arranged under one another.

Column, from O.Fr. columpne, from L. columna "pillar," collateral form of columen "top, summit," from PIE *kel- "to project."

Sotun, from Mid.Pers. stun, from O.Pers. stênâ "column," Av. stuna-, Skt. sthuna- "column."

column density
  چگالی ِ ستون   
cagâli-ye sotun

Fr.: densité de colonne   

Density of the interstellar matter lying between an object and the Earth in a cylinder with a unity base.

column; → density.

colure
  کلدم   
koldom

Fr.: colure   

Either of two great circles of the celestial sphere that passes through the poles and meets the ecliptic at either the solstice points (the solstitial colure) or the equinox points (the equinoctial colure).

From L. colurus, from Gk. kolouros "dock-tailed," from kol(os) "docked" + -ouros "-tailed," from oura "tail;" so called because the lower part is permanently hidden beneath the horizon.

Koldom, from Mod.Pers. kol "docked, short," most probably cognate with the Gk. term, as above, + dom(b) "tail," Av. duma- "tail." Recorded in classical dictionaries, kol has several variants in a large number of dialects: kola, kalta, kel, kelma, koc, kall, kor, kul in Gilaki, Tâleši, Lori, Malâyeri, Hamedâni, Qâeni, and others, cf. Av. kaurva- "bald, docked," kaurvôduma- "with a bald tail," kaurvôgaoša- "with bald ears."

com-, col-, con-, cor-, co-
  هم-، هن-، ها-، هَ-   
ham- (#), han- (#), hâ- (#), ha- (#)

Fr.: com-, col-, con-, cor-, co-   

Prefix denoting "together; with; joint; jointly". It is sometimes used for intensification as in complete, complain, convince.

M.E., from O.L., classical L. form cum "together, together with," Gk. koinos "common," from PIE *kom- "beside, near, by, with."

Ham- and ham "together, with; same, equally, even," Mid.Pers. ham-, like L. com- and Gk. syn- with neither of which it is cognate. O.Pers./Av. ham-, Skt. sam-, sa-; also O.Pers./Av. hama- "one and the same," Skt. sama-, Gk. homos-; originally identical with PIE numeral *sam- "one," from *som-. The Av. hąm- (nasal a) appears in various forms: ham-, han- (before gutturals, palatals, dentals) and also həm-, hən-, ha- (Bartholomae, 1772). Variants in Pers. ha- as in (Anâraki) ha-bend, → connect, and (Kurd.) hasûn "to whet, sharpen," and hâ- as in hâ-dâdan, hâ-gereftan, see Dehxodâ.

coma
  گیس، گیسو   
gis, gisu (#)

Fr.: coma   

1) The glowing envelope of gas and dust that surrounds a comet's nucleus.
2) An elongated, → comet-shaped → image of a → point source of → light caused by → aberration in the → optical system. In → telescopes it is often because → off-axis rays of light striking different parts of the → objective do not focus in the same → image plane.
Coma Berenices; → Coma cluster; → hydrogen coma.

L. coma "hair," from Gk. kome "hair;" → hair.

Coma Berenices
  گیسوان ِ برنیکه   
Gisovân-e Bereniké (#)

Fr.: Chevelure de Bérénice   

Berenice's Hair. A → constellation made up of many faint stars and located near the north Galactic pole between → Canes Venatici to the north, → Virgo to the south, → Leo to the west, and → Boötes to the east. Abbreviation: Com; genitive: Comae Berenices.

coma; L. Berenices genitive of Berenice, a queen of Egypt, wife of Ptolemy III, who sacrificed her hair to Aphrodite, begging her husband's victory in the war with the Assyrians, who had killed his sister. While the story is an old one, the constellation is relatively new, being introduced by Tycho Brahe (1546-1601).

Coma cluster
  خوشه‌ی ِ گیسو   
xuše-ye Gisu (#)

Fr.: amas de Coma   

The nearest rich cluster of galaxies which contains more than a thousand known galaxies, is about 20 million light-years in diameter, and lies about 280 million light-years away in the → constellation  → Coma Berenices. Also known as Abell 1656.

coma; → cluster.

combination
  میازش   
miyâzeš

Fr.: combinaison   

1) General: The act of combining or the state of being combined.
2) Math: The number of ways elements making up a set can be arranged into various groups without regard to their order in the group. → permutation

Noun from → combine

combinatorics
  میازشیک   
miyâzešik

Fr.: combinatoire   

A branch of mathematics dealing with the → combination and → permutation of sets of elements and mathematical relations that characterize their properties.

From combinator(ial) (from combinatorial analysis), + → -ics.

Miyâzešik, from miyâzeš, → combination, + -k, → -ics.

combine
  میازیدن   
miyâzidan

Fr.: combiner   

To cause to join in a close union or whole; unite.

From M.Fr. combiner, from L.L. combinare "to unite, yoke together," from L. → com- "together" + bini "two by two," adv. from bi- "two, twice," cf. Av. biš "twice," bi-, dva- "two," Skt. dvi- "two," Gk. di-, O.E. twi-.

Miyâzidan, infinitive from miyâz-, variant of miz- in â-miz-, âmixtan "to mix," âmizé, âmižé "mixture," âmiq "mixture; copulation;" Mid.Pers. âmêz-, âmêxtan (Proto-Iranian *āmis- ,*āmiz-; PIE *meik- "to mix"); cf. Av. mayas- "to mix;" Skt. miks- "to mix, mingle," miśr- "to mix, blend, combine;" Gk. misgein "to mix, mingle;" L. miscere (p.p. mixtus) "to mix;" O.C.S. meso, mesiti "to mix," Rus. meshat, Lith. maisau "to mix, mingle."

combustible
  سوزا   
suzâ (#)

Fr.: combustible   

1) Capable of catching fire and burning; inflammable.
2) A combustible substance.

combustion; → -ible.

combustion
  سوزش   
suzeš

Fr.: combustion   

1) Any chemical reaction in which a substance (fuel) combines with oxygen to produce heat and often light. Combustion reactions usually involve a complex sequence of free-radical chain reactions. The light is produced by excited atoms, molecules, or ions.
2) → nuclear combustion.

M.E., from O.Fr. combustion, from L. combustionem (nominative combustio) "a burning," noun of action from p.p. stem of comburere "to burn," from → com-, intensive prefix + urere "to burn."

Suzeš, → burning

come
  آمدن   
âmadan (#)

Fr.: arriver   

To approach or move toward a particular person or place.

M.E., from O.E. cuman "come, approach, arrive;" cf. Du. komen, Ger. kommen, Goth. qiman; cognate with Pers. âmadan, as below.

Âmadan "to come, to occur;" Mid.Pers. âmatan; O.Pers. gam- "to come; to go;" Av. gam- "to come; to go," jamaiti "goes;" Proto-Iranian *āgmatani; Skt. gamati "goes;" Gk. bainein "to go, walk, step;" L. venire "to come;" Tocharian A käm- "to come;" O.H.G. queman "to come;" E. come; PIE root *gwem- "to go, come."


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