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: 13048 Search : far
Algol-type variables
  ورتندگان ِ الغولگونه   
vartandegân-e Alqulguné

Fr.: variables de type Algol   

The same as eclipsing binary stars, the prototype of which is Algol.

Algol; → variable.

algorithm
  خوارزمیک   
xârazmik (#)

Fr.: algorithme   

1) A step-by-step problem-solving procedure, especially an established, recursive computational procedure for solving a problem in a finite number of steps.
2) Historically, the Arabic system of arithmetical notation (with the figures 1, 2, 3, etc.); the art of computation with the Arabic figures, one to nine, plus the zero; arithmetic.

From M.L. algorismus, a mangled transliteration of al-Khwarizmi, "native of Khwarazm," the surname of the Persian mathematician and astronomer Abu Ja'far Mohammad ibn Musa al-Khwarizmi (c780-c850).

Xârazmik, from Xârazmi (or Xwârazmi, from Xwârazm), the name of the Persian mathematician, + Persian affix → -ik, → -ics.

alias
  انیا   
anyâ

Fr.: alias   

General:An assumed name; otherwise called.
Electronics: A false signal in telecommunication links from beats between signal frequency and sampling frequency.

From L. alius "(an)other". Compare with Skt. anya "other, different," Av. anya-, O.Pers. aniya- "the one or the other," Arm. ail, Gk. allos "another," Goth. aljis "other". PIE *al- "beyond".

Anyâ from Mid.Pers. anya "other, otherwise," from Av. anya "other". This term is used as eyni in the Modern Persian Aftari dialect: eyni sâl "other year," eyni vacé "other child".

aliasing
  انیایی   
anyâyi

Fr.: réplication   

The condition that two or more functions are indistinguishable because they have the same values at a finite set of points. Such functions are said to be aliases of each others. The aliasing problem often occurs in undersampled discrete Fourier transform.

Aliasing, from → alias + → -ing.

Anyâyi, from anyâ, → alias, + noun forming suffix -i.

alibi
  انیگاه   
enigâh

Fr.: alibi   

A claim or piece of evidence that one was elsewhere when an act, typically a criminal one, is alleged to have taken place (OxfordDictionaries.com).

From L. alibi (adv.) "elsewhere, somewhere else," locative of alius "another, other, different," → alias.

Enigâh, literally "other place," from eni, from Mid.Pers. anya "other," → alias, +gâh "place," → time.

alidade
  عضاده   
ezâdé (#)

Fr.: alidade   

1) In a → planispheric astrolabe, the small revolving rod fixed to the center of the goniometric scale plotted on the → front or → back of the instrument. Unlike the → rule, the alidade has little vanes with holes or slots at each end, called → pinnules, which are used as sights, through which the observer can aim at a particular object. An index, often consisting of the edge of the alidade itself, shows on the goniometric scales the angle between the line of sight of the targeted object and a predetermined axis, i.e. the vertical of the observation locality (online museo galileo, VirtualMuseum).
2) A rule having a sight at each end, used in surveying.
3) A topographic surveying and mapping instrument used for determining directions, consisting of a telescope and attached parts.

M.E. allidatha, alhidade, from L. alhidada, from Ar. al-'izâda (العضاده), from al- "the" + 'izâda "an armlet, a bracelet; a sickle-like piece of metal, used by camel drivers, to pull down tree branches to camels."

Ezâdé, from Ar. al-'izâda.

alien
  بیگانه، بیگان   
bigâné (#), bigân

Fr.: 1) espèce envahissante; 2) extraterrestre   

1) A species not native to its environment; an introduced species.
2) A hypothetical creature from outer space; → extraterrestrial.

M.E., from O.Fr. alien "strange, foreign; a stranger, foreigner," from L. alienus "of or belonging to another, foreign, alien, strange," also, as a noun, "a stranger, foreigner," adjectival form of alius "(an)other," → alias; meaning "not of the Earth" first recorded 1920.

Bigâné "alien, foreigner," from Mid.Pers. bêgânag, from bêg-, bê- "out, outside, apart" (cf. Sogd. bêk "out, outside, apart, except," bêk-dênê "heretic," literally "out of religion") + suffix -ânag.

align
  آختیدن، آخطیدن   
âxatidan

Fr.: aligner   

To arrange in a line or so as to be parallel; to adjust to produce a proper relationship or orientation.

M.Fr. aligner, from O.Fr. aligner, from à "to" + ligner "to line," from L. lineare, from linea "linen thread, string, line;" → line.

Âxatidan, from â- intesive and nuance prefix + xat, → line, + infinitive suffix -idan.

align a telescope
  آختیدن ِ دوربین، ~ تلسکوپ   
âxatidan-e durbin, ~ teleskop

Fr.: aligner un télescope   

Setting the axis of a telescope parallel to prime directions. In equatorial mounting, they are made parallel with the Earth's axis of rotation and the equator respectively. → collimation.

align; → telescope.

aligned
  آختیده   
âxatidé

Fr.: aligné   

Arranged in a → straight line.

Past participle of → align.

aligned magnetic field
  میدان ِ مغناطیسی ِ آختیده   
meydân-e meqnâtisi-ye âxatidé

Fr.: champ magnétique aligné   

A magnetic field whose lines of force are oriented along a particular direction or by a particular manner (axially, vertically; randomly, properly, etc.)

aligned; → magnetic field.

alignment
  آختش، آخطش   
âxateš

Fr.: alignement   

The fact of being in line or bringing into line.

Verbal noun of → align; → -ment.

Alioth (ε Ursae Majoris)
  جون   
Jown (#)

Fr.: Alioth   

The brightest of the seven stars that make up the → Big Dipper → asterism. Alioth shines at magnitude +1.77 from a distance of about 80 → light-years. It is a white star of → spectral type A0pCr. The spectrum of the star is characterized by abnormally strong lines of → chromium and → europium.

Alioth, from Aliot, from Ar. Alyat (الیه) "tail, buttocks".

Jown, from Ar. Jawn "black camel or horse".

Alkaid (η Ursae Majoris)
  قاعد   
Qâed (#)

Fr.: Alkaïd   

The second brightest star in → Ursa Major and the end star in the handle of the → Big Dipper. Alkaid is a blue B3V main sequence star of apparent magnitude of 1.86 and lies at about 100 → light-years.

Alkaid "leader, chief," from Al-Qa'id al-Banat an-Na'ash "the leader of the daughters of the bier," from Banat "daughters" + Na'ash "bier". Banat an-Na'ash is the Ar. name of the constellation.

Qâed from Ar. Al-Qa'id.

alkali
  قلیا   
qalyâ (#)

Fr.: alcali   

A substance that dissolves in water to give hydroxide ions. A generic name for → bases.

M.E. alkaly, from M.fr. alcali, M.L. alkali, from Ar. al-qily (القلی) "salt wort," a plant growing in alkaline soils.

Qalyâ, loan from Ar., as above.

alkali line
  خط ِ قلیایی   
xatt-e qalyâyi

Fr.: raie alcaline   

A spectral line produced by an → alkali metal.

alkali; → line.

alkali metal
  فلز ِ قلیایی   
felez-e qalyâyi (#)

Fr.: métal alcalin   

Any of the chemical elements belonging to group A of the → periodic table, which burn vigorously in air; i.e. → lithium, → sodium, → potassium, → rubidium, → cesium, and → francium. Alkali metals have a → valence of one and are softer and less dense than other metals.

alkali; → metal.

alkaline
  قلیایی   
qalyayi (#)

Fr.: alkalin   

Having the properties of an → alkali; having a → pH greater than 7.0.

From alkal(i) + -ine a suffix denoting "of or pertaining to," "of the nature of," "like."

From qalyâ, → alkali, + -yi adj. suffix.

alkaline earth metal
  فلز ِ قلیایی ِ خاکی   
felez-e qalyâyi-ye xâki (#)

Fr.: terre alcaline   

Any of the metallic chemical elements belonging to group 2 of the → periodic table; i.e. → beryllium, → magnesium, → calcium, → strontium, → barium, and → radium. They are not found free in the nature because they are highly reactive.

alkaline; → earth; → metal.

Felez, → metal; qalyâyi, → alkaline; xâki "of or pertaining to soil," from xâk, → soil.

all
  همه   
hamé (#)

Fr.: tout, tous   

The whole quantity or amount.

M.E. al, plural alle; O.E. eall "all, every, entire;" cf. O.Fris., O.H.G. al, O.N. allr, Goth. alls.

Hamé- "all," variant hami "all the time, always;" Mid.Pers. hamâg "all," hamê "all the time, always;" Av. hama- "any;" cf. Skt. sama-"any, every, whichever;" Gk. amo-then "whichever;" Goth. sums "any;" O.N. sumr "any;" O.E. sum "some;" E. some.

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer AGB air Alf Alg all alp alt AM amo ana And ang ani ano Ant Ant apa apo app app Ara Arc ari Arr ash ass ast ast asy atm ato att aut ave axi Bab bal Bal bar bar bea Bek Bes bia Big bin bin bip biv bla bli blu Boh Bol Bos bou bra bri bro buo cal cal can cap car Car cat cat CCD Cen cen CH cha cha che Che chr cir cir cit 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 con Cop Cor cor cor cos cos cou cou Cow cre cri cro cry cur cya Cyg dan dar dat de- deb dec dec ded def deg del dem den dep des det dev dia dif dif dih dio Dir dis dis dis dis dis dis DO don dou dow dro dur dwa dyn Dys ear ebb ecl edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ esc eth Eur Eve exa exc exe exi exp exp ext ext ext fac fal far fed Fer fer fie fin fir fis fla flo flu fol for for fou fra fre Fre fro fut G-t gal gal gam gas Gau Gem gen geo geo geo gia Gli Gol gra gra gra gra gre gri gui H I Hag hal har hat He- hea hel Hel her Hes hie hig his hom hor hot Hub Hug hur hyd hyd hyg hyp ice ide ima Ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv Io ion iro isl iso iso Jac jet jud jur Kel Kep kil Klo Kui Lag lam Lap Lar lat law lea len lep Lib lig lim lin lin Lio lit loc LOF lon Lor low lum lun Lup Lyo 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 mit mod mod mol mon Mor mou mul mul mys nan Nat nau nec neo neu nev New NGC no nom non non nor not nuc nuc num nut obj obs obs occ ocu oft ome Oor ope opp opt opt orb ord ori ort osc out ove oxi pai pan par par par par pas pea pen per per per per Per per pha phi pho pho pho phy pio Pla pla pla pla Pla plu Poi pol pol pol poo pos pos pot pra pre pre pre pre pri pri pro pro pro pro pro Pro pro pse pul pur qua qua qua qua que rac rad rad rad rad rad rad ran rar ray rea rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot Rus Sac sal sat sca sca Sch sci Scu sec sec Sed sel Sel sen ser Sex Sha she sho sid sig sil sim sin siz sla Sma sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spi spr squ sta sta sta sta ste ste ste Sto Str str str sub sub suc sun sup sup sup sup sur swa syn syn tab tar tek tem ter tes the the the the Tho thr tid tim Tis Too Tor tra tra Tra tra tra tri tri tru Tul tur two Typ ult un- und uni uni unk upp Urc utt val var vec vel ver vib vio vir vis voi vor wan wat wav wax wea Wei whi Wil win WN9 wor X-r yel you zer zod > >>