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: 12948 Search : far
analytical mechanics
  مکانیک ِ آنالسی   
mekânik-e ânâlasi

Fr.: mécanique analytique   

A branch of → mechanics based on → variational principle that describes systems by their → Lagrangian or → Hamiltonian. Analytical mechanics provides a formalism that is different from that of Newton and does not use the concept of force. Among other things, analytical mechanics gives a more simple description of continuous and constrained systems. Moreover, its mathematical structure allows it an easier transition to quantum mechanical topics.

analytical; → mechanics.

analyze
  آنالسیدن، آناکاویدن   
ânâlasidan, ânâkâvidan

Fr.: analyser   

Infinitive of → analysis.

analyzer
  آنالسگر، آناکاوگر   
ânâlasgar, ânâkâvgar

Fr.: analyseur   

An optical device by which the direction of → polarization of a beam of light can be detected. Usually the light has been passed through a → polarizer before arriving at the analyzer.

Agent noun, from → analyze + → -er.

anamorphic
  آناریختی، آناریخت‌مند   
ânârixti, ânârixmand

Fr.: anamorphique   

The quality of an → anamorphic system.

ana- "up," + morphe "form," → morphology + → -ic.

anamorphic system
  راژمان ِ آناریخت، ~ آناریخت‌مند   
râžmân-e ânârixt, ~ ânârixtmand

Fr.: système anamorphique   

An optical system whose optical power, and imaging scale, differs in the two principal directions. See also → anamorphosis.

anamorphic; → system.

anamorphosis
  آناریخت‌مندی   
ânârixtmandi

Fr.: anamorphose   

1) Optics: The formation of a distorted image by an → anamorphic system.
2) Biology: The evolution from one type to another through a gradual and steady process of changes.
3) Art: A distorted image that appears in proportion when it is viewed from a specific point of view or reflected in a curved mirror, or with some other optical device.

From Gk. anamorphosis "transformation," noun of action from anamorphoein "to transform," from → ana- "up," + morphe "form" + -sis a suffix forming abstract nouns of action, process, state, condition, etc.

Ânârixtmandi, from ânâ- "up," + rixt "morphe," → morphology, + mand, → -ist + noun suffix -i.

Ananke [Jupiter XII]
  آننکه   
Ânanké

Fr.: Ananké   

The thirteenth of Jupiter's known satellites discovered by S.B. Nicholson in 1951. It orbits the planet at a mean distance of 21,200,000 km, and has a diameter of about 30 km.

In Gk. mythology, Ananke is the personification of destiny, unalterable necessity and fate; she is also the mother of Adrastea,

anastigmatic lens
  عدسی ِ گراور   
adasi-ye gerâ-var

Fr.: anastigmate   

A lens designed to correct → astigmatism.

astigmatism; → lens.

ancestor
  نیا   
niyâ (#)

Fr.: ancêtre   

One from whom a person is descendant; a forefather.

M.E. ancestre, from O.Fr. ancestre, ancessor "ancestor, forebear, forefather," from L.L. antecessor "predecessor," literally "fore-goer," agent noun from p.p. stem of L. antecedere "to precede," from ante "before" + cedere "to go," → process.

Niyâ, from Mid.Pers. niyâg "forefather, ancestor;" O.Pers. niyāka-, Av. nyāka-

and
  اُ، و   
o, va

Fr.: et   

1) (Conjunction, used to connect grammatically coordinate words, phrases, or clauses) Along or together with; as well as; in addition to; besides; also; moreover. → if and only if.
2) (Conjunction) Added to; plus (Dictionary.com).

From M.E., from O.E., akin to O.H.G. unti "and."

Va "and," graphical corruption of o "and;" Mid.Pers. ut, u- "and;" O.Pers. utā; Av. uta- "and;" cf. Skt. utá; maybe also influenced by Av. a disjunctive particle (Skt. ) "or," occasionally used in the sense of "and;" ... "either, or;" cf. Sogd. βa, fa "and, or," "or."

Anderson bridge
  پل ِ اندرسون   
pol-e Anderson

Fr.: pont d'Anderson   

A six-branch modification of the → Maxwell bridge that measures → inductance in terms of → resistance and → capacitance.

A. Anderson (1891, Phil. Mag. (5) 31, 329); → bridge.

androgynous
  مراچن   
merâcen

Fr.: androgyne   

Being neither distinguishably → masculine nor → feminine, as in dress, appearance, or behavior (TheFreeDictionary.com).

From L. androgynus, from Gk. androgynos "male and female in one; womanish man; hermaphrodite," from andros, genitive of aner "male," from PIE root *ner-, Pers. nar, → male, + gyne "woman," from PIE root *gwen- "woman," Pers. zan, → woman.

Merâcen, literally "man-woman," from merâ, from Ardestâni, Nâini, Tarqi (Natanz) mera "man," cf. Tâti malle "man," Pers. mir "master," Mid.Pers. mêrak "(young) man" + Gorgâni cen "woman," variant Pers. zan, → woman.

androgyny
  مراچنی   
merâceni

Fr.: androgyne   

The state of appearing to be neither feminine nor masculine.

Noun from → androgynous.

Andromeda
  آندرومدا، زن ِ به زنجیر بسته   
Ândromedâ, Zan-e bé Zanjir Basté (#)

Fr.: Andromède   

A northern constellation between → Perseus and → Pegasus located at approximately R.A. 1h, Dec. +40 deg. Abbreviation And, Genitive form Andromedae.

In Gk. mythology, Andromeda was the princess of Ethiopia, daughter of → Cepheus and → Cassiopeia. The queen Cassiopeia angered Poseidon by saying that Andromeda (or possibly Cassiopeia herself) was more beautiful than the Nereids. Poseidon sent a sea monster to prey upon the country; he could be appeased only by the sacrifice of the king's daughter. Andromeda in sacrifice was chained to a rock by the sea; but she was rescued by → Perseus, who killed the monster and later married her. Cassiopeia, Cepheus, and Andromeda were all set among the stars as constellations.

Zan-e bé Zanjir Basté "the chained woman," coined by the 11th century astronomer Biruni, from Ar. Emra'at al-mosalsalah "the chained woman," from the Gk. mythology.

Andromeda galaxy (M31, NGC 224)
  کهکشان ِ آندرومدا، ~ زن ِ به زنجیر بسته   
kahkašân-e Ândromedâ (#), ~ Zan-e bé Zanjir Basté (#)

Fr.: galaxie d'Andromède   

The nearest → spiral galaxy to our own and a major member of the → Local Group. It lies in the constellation → Andromeda and is the most remote object normally visible to the naked eye. The earliest known reference to this galaxy is by the Iranian astronomer Sufi who called it "the little cloud" in his Book of Fixed Stars (A.D. 964).

Andromeda; → galaxy.

Andromedids
  آندرومداییان   
Ândromedâiyân

Fr.: Andromédides   

A meteor shower which appears about 25 November with its → radiant located in the constellation → Andromeda. The Andromedids are the debris of → Biela's comet. The short-period comet, discovered in 1826, split into two parts in the middle of the 19th century and later vanished. Hence their alternative name Bielids.

Andromedids, from Andromeda constellation + → -ids suffix denoting "descendant of, belonging to the family of."

Ândromedâiyân, from Ândromedâ + -iyân, → -ids.

anemometer
  بادسنج   
bâdsanj (#)

Fr.: anémomètre   

An instrument for measuring and indicating the force or speed of the wind.

From Gk. anemos "wind" + → -meter.

Bâdsanj, from bâd "wind" + -sanj, → -meter.

angle
  زاویه، گوشه، کنج   
zâviyé, gušé, konj

Fr.: angle   

The figure formed by two lines extending from a common point; the figure formed by two intersecting planes (dihedral angle).

L. angulum (nominative angulus) "corner," a dim. form from PIE *ang-/*ank- "to bend;" cf. Skt. ankah "hook, bent," Gk. angkon "elbow," angkura "anchor," Lith. anka "loop," O.E. ancleo "ankle," O.H.G. ango "hook," Av. ank- "curved, crooked," Av. angušta- "toe," Mod.Pers. angošt, angol, angul "finger".

Zâviyé from Ar. zâwiyat "corner, angle".
Gušé "corner, angle," Mid.Pers. gošak "corner."
Konj, "angle, corner," → diagonal.

angle of deviation
  زاویه‌ی ِ کژرفت   
zâviye-ye kažraft

Fr.: angle de déviation   

The angle between the → incident ray of light entering an → optical system (such as a prism) and the → refracted ray that emerges from the system. Because of the different indices of refraction for the different wavelengths of visible light, the angle of deviation varies with wavelength.

angle; → deviation.

angle of emergence
  زاویه‌ی ِ زمرچش   
zâviye-ye zomarceš

Fr.: angle d'émergence   

The angle of the light coming out of a medium. For a medium with parallel sides (such as a glass slab) it is equal to the angle of incidence.

angle; → emergence.

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir cla clo clo clu coa coe 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 cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>