An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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<< < -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 arb are ari art ass ast ast ast Atl ato ato Aug aut Avo azi bac bal ban bar bas bea bel Bet bia Big bin bio bir bla bla blo blu Boh Bon bot Bow bre Bri bro but cal cal Can Cap car cas cat cau cel cen cen cha cha cha che Chi chr cir cir civ Cla clo clu CNO coa coe coi 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 cro Cru cub cur cyc cyl dar dat Daw de- Deb dec dec def def deg Del den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra dua dus dwa dyn e-f Ear ecl eco edu eig Ein ela ele ele ele Ele elo emi emp ene Enl env epi equ equ erg est Euc eva evo exa exc exe exo exp exp ext ext f m fac fal fas fee Fer fib fie fin Fir fix fle flu foc for for For fou Fra fre Fri ful fuz Gal Gal gal Gam gas Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro gul H-b hal Ham har Hay hea hel hel hem her het Hig hik hol hom hor hot Hub hum hyb hyd hyd hyp hyp ide ign ima imp imp imp inc ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos jun K-T Kep key kin Kol lad Lam lan lar las lat lea leg len lev lig lik lin lin lin Lis lob loc log loo low lum lun lun Lym Mac Mag mag mag mag mag Mag mak map Mar mas mat mat mea mea med mem mer MES met met MHD mic mid mil min mis mix mod mol mom Moo mos Mu mul mus nab nar nat neb neg nes neu New New nig nod non non non Nor noz nuc nul num OB obl obs Occ oct off Ohm on- ope Opp opt opt orb orb org Ori ort osm out ove ozo pal pap par par par pas pat pec pen per per per per per pH 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 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 Sag sam sat sca Sch Sch sco sec sec sec seg sel sem sen set sha Sha sho SI sid sil sim sin sis sky slo sna Soc sol sol sol Sol Som sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste sto sto str str sub sub sub sum sup sup sup sup sur sus sym syn sys tan Tay Tem ten ter The the the the thi thr tic tid tim Tol tor tot tra tra tra tra Tri tri tro tru tur two Typ UHE ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis VLT vol wad was wav wav wea wei Whe Wie win WN5 Wol WZ Yag yot zen zir > >>

Number of Results: 13033 Search : far
mis-
  دژ-   
dož- (#)

Fr.: més-   

A prefix meaning "ill, mistaken, wrong, wrongly"

M.E., from O.E. mis-, cognate with M.Du. misse-, O.H.G. missa-, Ger. miss-, perhaps literally "in a changed manner," and with a root sense of "difference, change" and thus possibly from PIE root *mei- "to change;" cf. Av. miθo- "perverted," Skt. methati "changes, alternates, joins;" L. mutare "to change."

Dož-, → dys-.

misalignment
  دژخطش   
dožxateš

Fr.: mésalignement   

Deviation of the chain of → optical components from the optimum → alignment in an instrument which leads to → loss of → light and poor → image.

mis-; → alignment.

miss
  نپیدن   
napidan

Fr.: manquer, rater, louper   

1) Fail to hit, reach, or come into contact with (something aimed at); to fail to do something.
2) Pass by without touching.
3) Feel or notice the loss or absence of.

M.E. missen, O.E. missan "fail to hit, miss (a mark); fail in what was aimed at," akin to Du. missen, Ger. missen "to miss, fail," from PIE *mei- "to change, go, move."

Napidan, literally "fail attain, reach, or find," from negation suffix na-, → not, + Av. ap- "to reach, attain;" cf. Mid./Mod.Pers. (+abi-) yâftan "to obtain, to find;" Proto-Ir. *Hap/f- "to reach, attain;" PIE *H1ep- "to take, seize, grab;" cf. L. apiscor "to reach, to get" (Cheung 2007).

missile
  موشک   
mušak (#)

Fr.: missile   

An object or weapon for throwing, hurling, or shooting. → ballistic missile.

From Fr. missile, from L. missile "weapon that can be thrown," from missus, p.p. of mittere "to send."

Mušak, literally "little mouse," or "mouse like," from a firework explosive that was likened to a mouse, from muš, → mouse, + -ak diminutive or similarity suffix.

missing mass
  جرم ِ گم‌شده، ~ نپیده   
jerm-e gomšodé, ~ napide (#)

Fr.: masse manquante   

The unseen mass whose gravitational influence is needed to account for the way galaxies rotate, and also to bind clusters of galaxies together. It is thought to consist, in part, of giant halos of dark matter that surround the visible portions of galaxies, and similar material that invisibly occupies the intergalactic voids. Same as → hidden mass; → dark matter.

Missing, from miss "to fail to be present," from M.E. missen, O.E. missan; cf. O.Fris. missa, M.Du. missen, Ger. missen "to miss, fail;" → mass.

Jerm, → mass; gomšodé "lost, missing," from gom "missing, lost" + šodé p.p. of šodan "to become" (from Mid.Pers. šudan, šaw- "to go;" Av. šiyav-, š(ii)auu- "to move, go," šiyavati "goes," šyaoθna- "activity; action; doing, working;" O.Pers. šiyav- "to go forth, set," ašiyavam "I set forth;" cf. Skt. cyu- "to move to and fro, shake about; to stir," cyávate "stirs himself, goes;" Gk. kinein "to move;" Goth. haitan "call, be called;" O.E. hatan "command, call;" PIE base *kei- "to move to and fro"); napide, p.p. of napidan, → miss.

missing satellites problem (MSP)
  پراسه‌ی ِ بنده‌وارهای ِ گم‌شده، ~ ~ نپیده   
parâse-ye bandevârhâ-ye gomšodé, ~ ~ napide

Fr.: problème des satellites manquants   

The observed underabundance, by one or two orders of magnitude, of → dwarf galaxies orbiting → spiral galaxies compared to their number predicted by the standard model. The → cold dark matter (CDM) model predicts that dwarf galaxies are the building blocks of large galaxies like the Milky Way and should largely outnumber them. Dwarf galaxies form first, they merge into bigger and bigger galaxies, and galaxies into groups of galaxies. The dark matter halos, however, are very dense, and dwarf halos are not destroyed in the merging, resulting in their large predicted number, in numerical simulations.

Probably first dealt with in an article entitled "Where Are the Missing Galactic Satellites?" (Lypin et al. 1999, ApJ 522, 82); → missing mass; → satellite; → problem.

mission
  گسیلان   
gosilân

Fr.: mission   

An operation designed to carry out the goals of a specific program, such as a a space flight or voyage.

Mission, from L. missionem (nominative missio) "act of sending," from mittere "to send," of unknown origin.

Gosilân, from gosil, variant gosi "sending away, dismission;" Mid.Pers. wisé "to despatch" (Parthian Mid.Pers. wsys- "to despatch;" Buddhist Mid.Pers. wsydy "to despatch;" Sogdian 'ns'yd- "to exhort"), from Proto-Iranian *vi-sid- "to despatch, send off," from prefix vi- "apart, away, out," + *sid- "to call" + -ân nuance suffix.

misspell
  دژوابیدن، بدوابیدن   
dožvâbidan, badvâbidan

Fr.: mal orthographier, mal épeler   

Spell a word wrongly.

mis-; → spell.

mist
  نزم   
nezm

Fr.: brume   

A very thin fog consisting of an aggregate of microscopic water droplets or wet hygroscopic particles (of diameter not less than 0.5 mm), in which the visibility at the earth's surface is greater than 1 km.

O.E. mist "dimness, mist," from P.Gmc. *mikhstaz (cf. M.L.G. mist, Icelandic mistur), from PIE *migh-/*meigh-; cf. Pers. miq "fog, mist;" Gk. omikhle, O.C.S. migla, Skt. megha- "cloud, mist." → nebula.

Nezm "mist, fog," variants nezu, nezvâ "mist," nam "moisture, humidity;" Av. napta- "moist," nabās-câ- "cloud," nabah- "sky;" cf. Skt. nábhas- "moisture, cloud, mist;" Gk. nephos "cloud, mass of clouds," nephele "cloud;" L. nebula "mist," nimbus "rainstorm, rain cloud;" O.H.G. nebul; Ger. Nebel "fog;" O.E. nifol "dark;" from PIE *nebh- "cloud, vapor, fog, moist, sky."

mitt
  دستپوش   
dastpuš

Fr.: mittaine   

A → glove that leaves the lower ends of the fingers bare, especially a long one made of lace or other fancy material and worn by women (Dictionary.com). → mitten.

mitten.

Dastpuš, from dast, → hand, + puš present stem of pušidan "to cover, to put on," → envelope.

mitten
  دستموژ   
dastmuž

Fr.: moufle   

A hand covering enclosing the four fingers together and the thumb separately (Dictionary.com). → glove, → mitt.

M.E. miteyn, from M.Fr., O.Fr. mitaine, from from O.Fr. mite "mitten," and from M.L. mitta.

Dasmtuž, literally "hand-shoe" (Ger. Handschuh, "glove," literally "hand-shoe"), from dast, → hand, + Muž, variant of Pers. muzé "shoe," Mid.Pers. môg "shoe, boot;" cf. Pers. paymôz- / paymôxtan "to dress;" Av. (+ pati-paitišmaoc- "to shoe;" Proto-Ir. *(h)mauc-? "to dress, clothe" (Cheung 2007).

mix
  آمیختن   
âmixtan (#)

Fr.: mélanger   

To combine (substances, elements, things) into one mass, collection, or assemblage, generally with a thorough blending of the constituents.

From M.E. myxte, from O.Fr. mixte, from L. mixtus, p.p. of miscere "to mix;" cognate with Pers. âmixtan, âmiz-, as below; from PIE *meik- "to mix."

Âmixtan, âmizidan "to mix," from 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."

mixed merger
  تشک ِ آمیخته   
tašk-e âmixté

Fr.: fusion mixte   

A merger that takes place when a → gas-poor galaxy collides with a → gas-rich galaxy.

Past-participle of → mix; → merger.

mixer
  آمیزگر   
âmizgar

Fr.: mélangeur   

In the → superheterodyne technique, the electronic component that lowers the frequency of the input signal and combines it with the signal coming from the → local oscillator to produce the → intermediate frequency signal. The lowered frequency, when amplified, has little chance to escape back into the antenna and produce feedback. Moreover, it is easier to make efficient amplifiers, filters, and other components for lower frequencies.

Agent noun from → mix.

mixing
  آمیزش   
âmizeš (#)

Fr.: mélange   

1) General: The process or result of irregular fluctuations in fluid motions on all scales from the molecular to large eddies.
2) Relating to → stellar interior, → mixing process.

Verbal noun of → mix.

mixing length
  درازای ِ آمیزش   
derâzâ-ye âmizeš

Fr.: longueur de mélange   

In a → turbulent flow, the average distance traveled by a → convective cell before it dissolves into its surroundings and deposits its energy. The mixing length is of the order of the → pressure scale height (HP), l = αHP, where α is the → mixing length parameter. See also → mixing length theory.

mixing; → length.

mixing length parameter
  پارامون ِ درازای ِ آمیزش   
pârâmun-e derâzâ-ye âmizeš

Fr.: paramètre de la longueur de mémange   

In the → mixing length theory, a parameter, α, that relates the → mixing length, l, to the → pressure scale height: α = l/HP. It is usually supposed that α is of order unity. Changes in α correspond to variations in the efficiency of the → convection, hence the transfer of heat.

mixing; → length; → parameter.

mixing length theory (MLT)
  نگره‌ی ِ درازای ِ آمیزش   
negare-ye derâzâ-ye âmizeš

Fr.: théorie de la longueur de mélange   

A theory dealing with heat transport by → turbulence which includes an elementary treatment of → convection. The central idea is that an unbalanced → buoyancy force drives a → convective cell to move through a distance, called the → mixing length, before the cell dissolves and joins the ambient medium. In this theory an adjustable → mixing length parameter  α is used. The theory, originally due to L. Prandtl (1925), was first applied to the Sun by L. Biermann (1932, Z. Astrophys. 5, 117).

mixing; → length; → theory.

mixing process
  فراروند ِ آمیزش   
farâravand-e âmizeš

Fr.: processus de mélange   

A process whereby → angular momentum and chemical species are transported from layer to layer within a star. The main mixing processes include: → convection, → overshooting, → rotation, and → turbulence. The extent to which the interiors of stars are mixed strongly influences their evolution, age, chemical content, and the relationship between their internal and surface → chemical abundances.

mixing; → process.

mixing ratio
  وابر ِ آمیزش   
vâbar-e âmizeš

Fr.:rapport de mélange   

Mass of water vapor per mass of dry air; expressed as grams per kilogram. → humidity

mixing; → ratio.

<< < -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 arb are ari art ass ast ast ast Atl ato ato Aug aut Avo azi bac bal ban bar bas bea bel Bet bia Big bin bio bir bla bla blo blu Boh Bon bot Bow bre Bri bro but cal cal Can Cap car cas cat cau cel cen cen cha cha cha che Chi chr cir cir civ Cla clo clu CNO coa coe coi 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 cro Cru cub cur cyc cyl dar dat Daw de- Deb dec dec def def deg Del den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra dua dus dwa dyn e-f Ear ecl eco edu eig Ein ela ele ele ele Ele elo emi emp ene Enl env epi equ equ erg est Euc eva evo exa exc exe exo exp exp ext ext f m fac fal fas fee Fer fib fie fin Fir fix fle flu foc for for For fou Fra fre Fri ful fuz Gal Gal gal Gam gas Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro gul H-b hal Ham har Hay hea hel hel hem her het Hig hik hol hom hor hot Hub hum hyb hyd hyd hyp hyp ide ign ima imp imp imp inc ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos jun K-T Kep key kin Kol lad Lam lan lar las lat lea leg len lev lig lik lin lin lin Lis lob loc log loo low lum lun lun Lym Mac Mag mag mag mag mag Mag mak map Mar mas mat mat mea mea med mem mer MES met met MHD mic mid mil min mis mix mod mol mom Moo mos Mu mul mus nab nar nat neb neg nes neu New New nig nod non non non Nor noz nuc nul num OB obl obs Occ oct off Ohm on- ope Opp opt opt orb orb org Ori ort osm out ove ozo pal pap par par par pas pat pec pen per per per per per pH 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 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 Sag sam sat sca Sch Sch sco sec sec sec seg sel sem sen set sha Sha sho SI sid sil sim sin sis sky slo sna Soc sol sol sol Sol Som sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste sto sto str str sub sub sub sum sup sup sup sup sur sus sym syn sys tan Tay Tem ten ter The the the the thi thr tic tid tim Tol tor tot tra tra tra tra Tri tri tro tru tur two Typ UHE ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis VLT vol wad was wav wav wea wei Whe Wie win WN5 Wol WZ Yag yot zen zir > >>