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: 12974 Search : far
color excess
  فزونی ِ رنگ   
fozuni-ye rang,

Fr.: excès de couleur   

The difference between the observed → color index of a star and the intrinsic color index corresponding to its → spectral type. It indicates the modification brought to a color index by the → interstellar absorption.

color; excess, M.E., from O.Fr., from L. excessus "departure, going beyond," p.p. excedere "to depart, go beyond," from → ex- "out" + cedere "to go, yield."

Fozuni, from afzuni "excess," afzuni kardan "to exceed bounds," → add; → color.

color index
  دیشن ِ رنگ   
dišan-e rang

Fr.: indice de couleur   

The difference between the → apparent magnitude of a star measured at one standard wavelength and the apparent magnitude at another longer, standard wavelength, allowing the quantitative measure of a star's color.

color; → index.

color temperature
  دمای ِ رنگ   
damâ-ye rang

Fr.: température de couleur   

The temperature of that black-body which has the same spectral energy distribution in a limited spectral region, as the object under study has.

color; → temperature.

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."

<< < -es -iv -ti 21- a p abe abs abs acc acc acc act act ada adi ads aes Age Alb Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app app arc Arg ari art ass ast ast ast atm ato att Aur aut axi azi bac Bal Bar Bar Bay Bec Ber bet bic bij bin bio Bir bla Bla blu blu bol Boo bou bra Bre bro bug C r cal Cal can car Car Cas cat cau cel cen cer Cha cha Cha che cho cir cir cir Cla cli clo clu co- cod coh col col col com com com com com com com com Com con con con con con con con con con con con coo cop Cor cor cor cos cos Cou cou CP cre cri cro CSP cur cya Cyg dan dar dat de- deb dec dec dee def deg del dem den dep des det dev dia dif dif dih dip dir dis dis dis dis dis diu doc doo dou dow Dru dus dwa dyn Dys Ear ecc eco edi EHB Ein ela ele ele ele ele ell eme emp end Eng ent epi equ equ Era est eth Eur evi exa exc exe exi exp exp ext ext eye fac fal Far fed Fer fer fie fin fir fit fla flo flu fol for for Fou fra fre Fre ful fuz Gal gal Gal gam gas Gau gen gen geo geo geo gib glo gos gra gra gra gra Gre gri gui H I hal Ham har Haw hea hei hel Hel her het hie hig Hob hom Hor hot Hub hum Huy hyd hyd hyp hyp ico if ima imp imp in- inc Ind ind ine inf inf inf ini ins ins int int int int int int int int int inv ion iro ise iso iso Jab jet Jov Jur Kee Kep kil Kis kry Lag lam lan Lar lat law lea lem lep Li lig lim lin lin lin lit loc loc lon Lor low lum lun Lup Lym mac mag mag mag mag mag mai man Mar mas mas mat Max mea mec meg Mer Mer met met met mic mid mil Min Mir mix mod mod MOL mon mor mov mul mur N66 Nap nat nea neg Ner neu New New nic nod non non non nor nov nuc nul num O-t obl obs obt och off Ohm on- opa Oph opt opt ora orb ord Ori ort osc out ove ozo pal pan par par par par pat pec pen per per per per per Pfu pha pho pho pho phy pie pla Pla Pla pla pla Plo poi pol pol pol pol por pos pot pow pre pre pre pre pri pri pri pro pro pro pro Pro pro Pru pul pul Pyt qua qua qua qua quo rad rad rad rad rad rad ram Ran rat re- rea rec rec red red ref ref reg Reg rel rel rem rep res res res ret rev rho rif Rin Rob Rom rot rot rul S D Sai san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky Slo sno sof sol sol sol sol sor sou spa spa spe spe spe sph spi spi spr SS sta sta sta sta ste ste ste Sto str str stu sub sub suc sun sup sup sup sup sur swe syn syn tad Tau tel ten ter tet the the the thi Tho thr tid tim Tit top tot tra tra tra tra tre tri Tro tru tur TW Typ U G ult unb und uni uni uns ura use val vap vec Vel Ven Ver Vie Vir vir vis vol W V war wav wav wea Wei Wez wid win WN3 Wol Wro Y d YOR zen zir > >>