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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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<< < -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 > >>

Number of Results: 13048 Search : far
Megrez (δ Ursae Majoris)
  مغرز   
maqrez (#)

Fr.: Megrez   

One of the seven stars of the → Big Dipper, which links Ursa Major's tail to the Bear's hindquarters. Megrez is the dimmest of the Big Dipper stars at magnitude +3.3. It is an A3 dwarf, about 20 times more luminous that the Sun, lying 81 light-years away.

From Ar. al-Maghriz(المغرز) "the root, base, bottom" (of the Bear's tail).

Meissa
  میسان   
Maysân

Fr.: Meissa, Lambda (λ) Orionis   

A → giant star of → apparent visible magnitude 3.54 in the → Orion constellation. λ Ori is of → spectral type O8 III, has a mass of about 28 → solar masses, a size of about 10 → solar radii, and an → effective temperature of around 35,000 K. Meissa is a → soft X-ray source with a → luminosity of 1032 erg s-1 and peak emission in the energy range of 0.2-0.3 keV, which is probably generated by the → stellar wind. Meissa is a member of the → Orion OB1 association. It is in fact a → double star with a → companion at an angular separation of 4.41 arcseconds. This fainter component has a magnitude of 5.61, is a → main sequence star of → spectral type B0.5 V. There is an outlying component, Meissa C, which is an F-type main sequence F8 V star. This star in turn may have a very low mass companion that is probably a brown dwarf. λ Ori, excites a fairly symmetric → H II region, Sh2-264 surrounding it. Many observational studies have found dark clouds external to this H II region.

Arabic al-maysan (مَیسان) "bright."

melt
  گداختن، گدازیدن   
godâxtan, godâzidan (#)

Fr.: fondre   

(v.int.) To become liquefied by warmth or heat, as ice, snow, butter, or metal. (v.tr.) To reduce to a liquid state by warmth or heat; to fuse.

M.E. melten, O.E. meltan "become liquid;" cf. O.N. melta "to digest;" Gk. meldein "to melt," L. mollis "soft, mild."

Godâxtan, godâz- "to melt," from Mid.Pers. vitâxtan, vitâcitan "to melt," from Av. vi-taxti- "flowing away, melting," from vi- "apart, away from, out" (O.Pers. viy- "apart, away;" cf. Skt. vi- "apart, asunder, away, out;" L. vitare "to avoid, turn aside") + tak- "to run, to flow," taciāp- "flowing water," tacinti (3pl.pers.act.) "to flow," tacar- "course," tacan "current, streaming;" Mod.Pers. tâz-, tâxtan "to run; to hasten; to assault," tâzi "swift (greyhound)," tak "running, rush;" Mid.Pers. tâz-, tâxtan "to flow, to cause to walk," tc- "to flow, to walk," tag "running, attack," tâzig "swift, fast;" Khotanese ttajs- "to flow, to walk;" cf. Skt. tak- "to rush, to hurry," takti "runs;" O.Ir. tech- "to flow;" Lith. teketi "to walk, to flow;" O.C.S. tešti "to walk, to hurry;" Tokharian B cake "river;" PIE base *tekw- "to run; to flow."

meltdown
  فروگداخت   
forugodâxt (#)

Fr.: fusion du cœur de réacteur   

A severe accident in a nuclear reactor which is caused by a major failure in the reactor cooling circuit leading to the melting of the reactor core. Without coolant, the core would overheat so that the uranium fuel would melt. If the core continued to heat up, the steel walls of the core would also melt. If the molten core escaped from the containment housing of the reactor, large amounts of highly radioactive materials would be released into the atmosphere. The radioactive contamination of the air, water, and soil can have disastrous consequences for life.

melt; down, M.E. doun, from O.E. dune "downward," short for adune, ofdune, from a-, of "off, from" + dune "hill."

Forugodâxt, from foru- "down, downward; below; beneath," as in forurixtan, forunešastan, foruraftan (Mid.Pers. frôt "down, downward;" O.Pers. fravata "forward, downward;" cf. Skt. pravát- "a sloping path, the slope of a mountain") + godâxt past stem of godâxtan, godazidan → melt.

melting point
  نقطه‌ی ِ گداز   
noqte-ye godâz (#)

Fr.: point de fusion   

The temperature at which a solid changes to a liquid.

melting; → point.

member
  هموند   
hamvand (#)

Fr.: membre   

A person or a thing that is part of a group body; e.g. a star which belongs to a cluster.

From M.E., from O.Fr. membre, from L. membrum "limb, member of the body, part."

Hamvand, literally "linked, joined together," from 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-; also O.Pers./Av. hama- "one and the same," Skt. sama-, Gk. homos-; originally identical with PIE numeral *sam- "one," from *som-. The Av. ham- appears in various forms: han- (before gutturals, palatals, dentals) and also hem-, hen-) + vand "joined, tied," from bastan, vastan "to bind, shut" (O.Pers./Av. band- "to bind, fetter," banda- "band, tie" (cf. Skt. bandh- "to bind, tie, fasten;" PIE *bhendh- "to bind;" Ger. binden; E. bind).

membership
  هموندی   
hamvandi (#)

Fr.: adhésion   

The state of being a member.

From → member + -ship a native E. suffix of nouns denoting condition, character, office, skill, etc., from M.E., O.E. -scipe; akin to shape.

hamvandi, from hamvand, → member, + -i condition, character suffix.

membership function
  کریای ِ هموندی   
karyâ-ye hamvandi

Fr.: fonction d'adhésion   

One of several functions used in the → fuzzification and → defuzzification steps of a → fuzzy logic system to map the → nonfuzzy input values to → fuzzy linguistic terms and vice versa. A membership function is used to quantify a linguistic term.

membership; → function.

memorize
  برمیدن، از بر کردن   
barmidan, az bar kardan

Fr.: mémoriser   

To commit to memory, learn by heart.

From memor-, → memory, + → -ize.

Barmidan, from barm, → memory; az bar kardan, literally "to do from memory," from az preposition, bar, contraction of barm, kardan "to do, make," → -ize.

memory
  برم   
barm

Fr.: mémoire   

1) The faculty of the mind to preserve and recall past sensations, thoughts, knowledge, etc.
2) In computers and recording instruments, any device into which information can be introduced and later extracted.

M.E. memorie, from L. memoria, from memor "mindful, remembering;" cf. Gk. mermera "care," merimna "anxious thought, sorrow," martyr "witness;" Pers. šomârdan "to count;" Mid.Pers. ôšmârtan, ôšmurtan "to reckon, calculate, enumerate, account for;" from Av. base (š)mar- "to have in mind, remember, recall," pati-šmar- "to recall; to long for," hišmar-; Skt. smar- "to remember, become aware," smarati "he remembers."

Barm "memory," variant bar (az bar kardan "to memorize"), bir, vir, from Mid.Pers. varm "memory," variants vir, vârom "mind, conscience;" from Av. vārəma, vārəm "according to one's wishes," from var- "to choose."

memory capacity
  گنجایش ِ برم   
gonjâyeš-e barm

Fr.: capacité de mémoire   

The amount of information which can be retained in a memory, usually expressed as the number of words which can be retained. For comparison of different memories this number is expressed in bits.

memory; → capacity.

Mendeleev's table
  جدول ِ مندلیف   
jadval-e Mendeleev (#)

Fr.: tableau de Mendeleïev   

See → periodic table.

periodic table.

meniscus
  ماهک، کوژ-کاو   
mâhak, kuž-kâv

Fr.: ménisque   

A → lens with a crescent-shaped section; a → concavo-convex lens.

Mod.L. meniscus, from Gk. meniskos "lunar crescent," diminutive of mene, → moon.

Mâhak, diminutive of mâh, → moon.
Kuž-kâv "convexo-concave," → convex; → concave.

Menkalinan (Beta Aurigae)
  منکب ذی العنان، شانه‌ی ِ ارابه‌ران   
Mankeb-zel-enân, šâne-ye arâbe-rân

Fr.: Menkalinan   

A multiple star of magnitude V = 1.90 which is situated in the → Auriga constellation at 81 → light-years away. Other main designations: HR 2088 and HD 40183. Although the third brightest star of the constellation, it bears "Beta" designation. Menkalinan is composed of two main components, which make up a → spectroscopic binary. The combined apparent magnitude varies over a period of 3.96 days between +1.89 and +1.94, as every 47.5 hours one of the stars partially eclipses the other. Both are metallic-lined → subgiant stars of spectral type A2 IV. Each is about 48 times more luminous than the Sun and has roughly the same mass and radius (2.6 times that of the Sun). There is a third component of magnitude 14.1, which is separated from the main pair by 13'', corresponding to a projected distance of 330 → astronomical units.

From Ar. Al Mankib dhi'l 'Inan (منکب ذی العنان) "the Shoulder of the One Who Holds the Reins," which is the rendition of the Gk. mythology character Auriga (Charioteer).

Menkent (Theta Centauri)
  منکب   
Mankab

Fr.: Menkent (θ Centauri)   

A → giant star of → apparent visual magnitude +2.06 located in the southern constellation → Centaurus. It has a → spectral type of K0 III and lies 61 → light-years away. Also called Haratan.

Menkent, corruption of Ar. Mankib "shoulder," short for Mankib al-Qanturis (منکب القنطورس ) "shoulder of Centaurus."

Mensa
  میزکوه   
Mizkuh

Fr.: Table   

The Table Mountain. A faint constellation near the south celestial pole, at 5h right ascension, 80° south declination. It contains part of the → Large Magellanic Cloud, and its brightest star is of magnitude 5.1. Abbreviation Men; genitive Mensae.

First introduced by the French astronomer Nicolas Louis de Lacaille (1713-1762) under the name Mons Mensae, from L. mons "mountain" + mensa "table" to refer to Table Mountain in South Africa. Lacaille made important early observations of the southern sky from the Cape Town region.

Mizkuh, from miz "table," originally "preparations for entertaining a guest; guest;" Mid.Pers. mêzd "offering, meal" + kuhmountain.

mental
  منتی، منتال   
menti, mentâl

Fr.: mental   

Of or pertaining to the → mind.

M.E., from M.Fr. mental, from L. mentalis "of the mind," from mens (genitive mentis) "mind," from PIE root *men- "to think."

Menti, mentâl, adjectives of ment, → mind; → -al.

mentality
  منتیگی   
mentigi

Fr.: mentalité   

1) Mental capacity or endowment.
2) Mental capacity or endowment (Dictionary.com).

mental; → -ity.

mention
  ۱) ایات؛ ۲) ایاتیدن   
1) ayât; 2) ayâtidan

Fr.: 1) mentionner; 2) mention   

1) To refer briefly to; name, specify, or speak of (Dictionary.com).
2) A direct or incidental reference; a mentioning (Dictionary.com).

M.E. mencioun, from O.Fr. mencion "mention, memory, speech," from L. mentionem "a calling to mind, a speaking of," from root of Old L. minisci "to think," related to mens "mind," from PIE root *men- "to think;" cf. Pers. man, mân "thought, to think," → mind.

Ayât, from Mid.Pers. ayât, ayâd "remembrance, recollection, memory;" Mod.Pers. yâd.

Merak (β Ursae Majoris)
  مراق   
Merâq (#)

Fr.: Merak   

A blue → dwarf star of → spectral type A1 with an → apparent magnitude of 2.37 in the constellation → Ursa Major. It lies 79 → light-years away and has a → luminosity almost 60 times solar, and a mass about triple that of the Sun. Although Merak ranks fifth in brightness in the → Big Dipper, it received the Beta designation from Bayer, who lettered the Dipper's stars from front to back.

From Ar. al-Maraqq (المراق) "the soft parts of the belly, the loins."

<< < -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 > >>