An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

<< < -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 > >>

Number of Results: 12974 Search : far
calculus of vectors
  افماریک ِ بردارها   
afmârik-e bordârhâ

Fr.: calcul vectoriel   

The area of calculus dealing with differentiation and integration of vector-valued functions; a sub-area of tensor calculus.

calculus; → vector.

Afmârik, → calculus; bordâr, → vector.

caldera
  تیان   
tiyân

Fr.: caldeira   

A large, roughly circular, → crater with diameter at least three or four times depth on the summit or in the side of a → volcano. A caldera can form from a volcanic blast or the collapse of a volcanic cone into an emptied → magma chamber.

From Sp. caldera "cauldron, kettle," also name of a crater on Canary Islands, from L. caldarius "of warming," from calidus "warm, hot," → calorie.

Tiyân "large cauldron; cauldron used for warming water in a communal bathhouse," of unknown origin.

Caldwell Catalog
  کاتالوگ ِ کالدول   
kâtâlog-e Caldwell

Fr.: catalogue de Caldwell   

A collection of 109 impressive celestial objects compiled for amateur astronomers. These objects (→ star clusters, → nebulae, → supernova remnants, and → galaxies), selected from the → New General Catalog and the → Index Catalog, are not present in the → Messier catalog.

Named after Patrick Caldwell Moore (1923-2012), English amateur astronomer, who compiled the catalog in 1995; → catalog.

calendar
  ۱) گاهشمار، گاهشماری، گاهمار؛ ۲) سالنامه   
1) gâhšomâr (#), gâhšomâri (#), gâhmâr; 2) sâlnâmé (#)

Fr.: calendrier   

1) Any of various systems for measuring and recording the passage of time by dividing the year into days, weeks, and months.
2) A table showing the months, weeks, and days in at least one specific year.
chronology.

M.E. calender, from O.Fr. calendier, from L. calendarium "account book," from kalendae "calends" the first day of the Roman month, from calare "to announce solemnly, call out," as the priests did in proclaiming the new moon that marked the calends, from PIE base *kele- "to call, shout" (cf. Skt. usakala "cock," lit. "dawn-calling;" Gk. kaleo "to call," kelados "noise," kledon "report, fame;" O.H.G. halan, O.N. kalla "to call;" O.E. hlowan "to low;" Lith. kalba "language").

Gâhšomâr, gâhšomâri, gâhmâr from gâh "time," Mid.Pers. gâh, gâs, + šomâr, mâr "reckoning," → calculate.
Sâlnâmé, from sâl, → year, + nâmé "a writing, letter, book."

calendar day
  روز ِ گاهشماری، ~ گاهماری   
ruz-e gâhšomâri, ~ gâhmâri

Fr.: jour du calendrier   

A period of 24 hours, from one midnight to the following midnight.

calendar; → day.

calendar month
  ماه ِ گاهشماری، ~ گاهماری   
mâh-e gâhšomâri, ~ gâhmâri

Fr.: mois du calendrier   

One of the periods into which a calendar is divided, ordinarily 12, but in earlier systems 10 (the first Roman calendar under Romulus) or 13 (ancient Iranian calendar using a month intercalation).

calendar; → month.

calendar year
  سال ِ گاهشماری، ~ گاهماری   
sâl-e gâhšomâri, ~ gâhmâri

Fr.: année du calendrier   

The time interval between the new year's day in a given calendar system and the day before the following new year's day. In the Gregorian system the calendar year begins on January 1 and ends on December 31. In the Iranian calendar it begins on Farvardin 1, the day closest to the spring equinox and ends on Esfand 29 or 30.

calendar; → year.

calf
  ۱) گوگ، گوساله؛ ۲) پویز   
1) gug (#), gusâlé (#); 2) poviz

Fr.: 1) veau; 2) mollet   

1) Young of a bovine animal. See also → calve, → glacier calving.
2) The fleshy part of a person's → leg below the → knee.

M.E., from O.E. cealf, calf, cognate with M.Du. calf, Ger. Kalb, Gothic kalbo.

1) Gug (Dehxodâ), variant gog "calf;" probably from Proto-Ir. *gao-ka "baby cow, little caow," from *gao- "cow, bull," → cow, + suffix -*ak.
Gusâlé, literally "young in years," from gu, → cow, + sâl, → year.
2) Poviz, from Laki poviz "calf," may be ultimately from *povik, from *pov variant of "leg, → foot" + suffix-ik, → -ics; cf. Ilâmi, Nahâvandi piz "the leg calf."

calibrate
  کبیزیدن   
kabizidan

Fr.: étalonner   

To adjust or determine, by comparison with a standard, the response magnitude of a measuring instrument as a function of the input signal. For example, to determine line wavelengths in the spectrum of an astronomical object, or to graduate a hygrometer.

From M.Fr. calibre, via Sp. or It., from Ar. qalib "a mold, last," perhaps from Gk. kalopodion "a shoemaker's last," from kalon "wood" + podos gen. of pous "foot."

Kabizidan, verbal form of kabiz (varianats kaviz, kaviž, kafiz) "a measure for grain, a bushel," from Mid.Pers. kabiz "a grain measure," loaned in Arm. kapic "a grain measure," and in Gk. kapithe, as attested in Xenophon.

calibration
  کبیزش   
kabizeš

Fr.: étalonnage, calibration   

1) The act or process of calibrating or the state of being calibrated.
2) A set of graduations that show positions or values.

Calibration, noun from → calibrate.

Kabizeš, noun from kabizidan, → calibrate.

calibration curve
  خمِ کبیزش   
xam-e kabizeš

Fr.: courbe d'étalonnage   

An empirical curve obtained through appropriate exposures in order to determine the instrument's response. For example, a curve allowing the conversion of relative intensities of an observed object into absolute fluxes, or a curve relating the detector's pixel positions to wavelengths.

calibration; → curve.

calibration error
  ایرنگِ کبیزش   
irang-e kabizeš

Fr.: erreur d'étalonnage   

A systematic error in the constant values to be applied to a measuring instrument.

calibration; → error.

Irang, → error; kabizeš, → calibration.

calibration exposure
  نوردادِ کبیزش   
nurdâd-e kabizeš

Fr.: pose d'étalonnage   

An exposure obtained with an instrument mounted on the telescope using an artificial illuminating source in order to calibrate the instrument.

calibration; → exposure.

Nurdâd, → exposure; kabizeš, → calibration.

calibration lamp
  لامپِ کبیزش   
lâmp-e kabizeš

Fr.: lampe d'étalonnage   

A lamp used for instrument calibration, such as an internal He-Ar arc for wavelength calibration or an external source of light placed in the telescope dome for flat-field exposures.

calibration; lamp, from O.Fr. lampe, L. lampas, from Gk. lampas "torch, lamp, light, meteor," from lampein "to shine."

Kabizeš, → calibration; lâmp, from Fr., as above.

calibrator
  کبیزنده   
kabizandé

Fr.: étalon   

A general term for certain reference astronomical sources that allow determining the characteristics (magnitude, distance, velocity, etc.) of other sources. → primary calibrators, → secondary calibrators.

Calibrator, from → calibrate + → -or.

Kabizandé, agent noun from kabizidan, → calibrate.

Callipic period
  دوره‌ی ِ کلیپوسی   
dowre-ye Kalipusi

Fr.: période callipique   

A period of 76 years after which the new and full moons would return to the same day of the solar year. This was intended as an improvement of the → Metonic cycle because the 6940 days of the Metonic cycle exceeded 19 years by about a quarter of a day, and exceeded 235 → lunations by a larger amount of time.

Named after Calippus of Cyzicus (about 370-300 BC), a Greek astronomer and mathematician.

Callisto (Jupiter IV)
  کالیستو   
Kâlisto (#)

Fr.: Callisto   

The eighth of → Jupiter's known moons and the second brightest and the outermost of the four → Galilean satellites. With a diameter of 4800 km (0.38 Earths), Castillo is roughly the same size as Mercury. It orbits Jupiter in 16.689 days at a distance of 1,883,000 km from the planet, beyond Jupiter's main → radiation belts. It is the third largest moon in the entire solar system. Its mass is 10.76 × 1022 kg (about 1.5 Earth Moons) and its mean → surface temperature is -155 °C. The most prominent feature of Callisto is its craters, as it has the most craters of any object in the solar system. Due to its orbit being further away from Jupiter, it is not under the same → tidal heating influences as → Io, → Europa, or → Ganymede. Callisto's thin → atmosphere is composed of → carbon dioxide and likely some → molecular oxygen. Callisto is thought to have formed as a result of slow → accretion from the → protoplanetary disk of gas and dust that surrounded Jupiter after its formation.

Callisto, an attendant of Artemis in Greek mythology. Because of her love affair with Zeus, she was transformed into a bear by Artemis. According to another legend she was changed into a bear by the jealous Hera. Zeus transferred her to the heavens as the → constellation  → Ursa Major (great bear).

calorie (cal)
  کالری   
kâlori (#)

Fr.: calorie   

1) Thermodynamics: The amount of → heat, in the → CGS system, required to raise the temperature of one gram of water from 14.5 °C to 15.5 °C at standard pressure. It is equal to 4.1858 → joules, a quantity called the 15° calorie. Also called gram-calorie, small calorie.
2) Physiology: A unit used to express the heat output of an organism and the fuel or energy value of food. It is equal to one kilocalorie.

From Fr. calorie, from L. calor "heat," calidus "warm;" PIE base *kelə- "cold; warm;" Av. sarəta- "cold;" Mod.Pers. sard "cold, cool;" Skt. śiśira- "cold;" Ossetian sald "cold," Lith. šaltas "cold," silti "become warm;" Welsh clyd "cool."

calorimetry
  گرماسنجی   
garmâsanji (#)

Fr.: calorimétrie   

The measurement of the amount of → heat involved in various processes, such as chemical reactions, changes of state, and formation of solutions.

From L. calori- "heat," combining form of calor, → calorie, + → -metry.

Garmâsanji, from garmâ  → heat + -sanji  → -metry.

calve
  گوگیدن   
gugidan

Fr.: vêler   

1) To give birth to a calf.
2) Of a → glacier, to break off so as to give birth to an → iceberg. → glacier calving.

M.E. calven, O.E. (Anglian) *calfian, from → calf.

Gugidan, infinitive from gug "cow, bull," → cow.

<< < -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 > >>