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

<< < -me mac mag mag mag mag mai man Mar mas mas mat May mea mec mem mer mes met met Mic mic mig Mim Min mis mod mod mol mon mor mov mul Mus > >>

Number of Results: 672
mechanical wind
  باد ِ مکانیکی   
bâd-e mekâniki

Fr.: vent mécanique   

A process in which matter is shed into a → Keplerian disk from a star rotating at the → critical velocity. The disk is probably destroyed by the pressure exerted by the stellar radiation and finally matter is lost. Such a process seems to occur around → Be stars which are stars rotating at or very near the critical limit (Meynet et al. 2007, arXiv:0709.2275).

mechanical; → wind.

mechanically
  ساز-و-کاریکانه، ساز-و-کاروارانه   
sâzokârikâné, sâzokârvârâné

Fr.: mécaniquement   

1) In a mechanical manner; by a mechanism.
2) In a machine-like manner; without feeling.

mechanical; → -ly.

mechanician
  ساز--و-کارمند، ساز-و-کار-گر   
sâzokârmand, sâzokârgar

Fr.: mécanicien   

A person skilled in constructing, working, or repairing machines; mechanic; machinist (Dictionary.com).

From → mechanic + -ian.

mechanics
  مکانیک، ساز-و-کاریک   
mekânik (#), sâzokârik

Fr.: mécanique   

A branch of → physics that deals with motion and the → action of → forces on bodies. Mechanics may be divided into three areas, → kinematics, → dynamics, and → statics.

From mechanic, from L. mechanicus, from Gk. mekhanikos "an engineer," also "inventive," literally "pertaining to machines" (adj.), from mekhane, → machine, + → -ics.

Mekânik, loan from Fr. Sâzokârik, from sokâr, → mechanism, + -ik, → -ic.

mechanism
  ساز-و-کار   
sâzokâr (#)

Fr.: mécanisme   

1) The structure or arrangement of parts of a machine or similar device, or of anything analogous.
2) The agency or means by which an effect is produced or a purpose is accomplished.

From Mod.L. mechanismus, from Gk. mekhane, → machine.

Sâzokâr, literally "making and working," from sâz "apparatus; (musical) instrument," from sâzidan, sâxtan "to build, make, fashion; to adapt, adjust, be fit" (from Mid.Pers. sâxtan, sâz-, Manichean Parthian s'c'dn "to prepare, to form;" Av. sak- "to understand, to mark," sâcaya- (causative) "to teach") + kâr "work," from kardan "to do, to make" (Mid.Pers. kardan; O.Pers./Av. kar- "to do, make, build;" Av. kərənaoiti "he makes;" cf. Skt. kr- "to do, to make," krnoti "he makes, he does," karoti "he makes, he does," karma "act, deed;" PIE base kwer- "to do, to make").

median
  میانه   
miyâné (#)

Fr.: médiane   

Statistics: The middle value in a sample sorted into ascending order. If the sample contains an even number of values, the median is defined as the mean of the middle two.
Geometry: The line from a vertex of a triangle to the midpoint of the opposite side.

From M.Fr. médian, from L. medianus "of the middle," from medius "middle;" akin to Pers. middle, → medium, → meddle; from PIE *medhyo-, from base *me- "between;" → medium.

Miyâné from miyân, → middle, + nuance suffix.

medicine
  پزشکی   
pezeški (#)

Fr.: médecine   

The art or science of restoring or preserving health or due physical condition, as by means of drugs, surgical operations or appliances, or manipulations (Dictionary.com).

M.E. medicin, from O.Fr. medecine "art of healing, cure," from L. medicina "the healing art; a remedy," feminine of medicinus (adj.) "of a doctor," from medicus "a physician;" PIE root *med- "to measure, limit, consider, advise," → dimension; cf. Av. vi-mad- "physician;" Gk. medein "to rule;" L. meditari "think or reflect on, consider," → meditation; Ir. miduir "judge;" O.E. metan "to measure out."

Pezeški, from pezešk "physician," from Mid.Pers. bizešk "physician," bêšâz "medicinal;" Av. bišaz- "to cure, heal;" cf. Skt. bhisaj- "healer, physician."

meditate
  سگالیدن   
segâlidan (#)

Fr.: méditer   

To engage in thought or contemplation; reflect. → consider.

Back formation from → meditation.

Segâlidan "to meditate, consider, think," from Mid.Pers. uskaridan "to think, consider, discuss," from us-, → ex-, + kar- "to observe, to consider;" related to engâridan, negaristan, âgâridan, → consider.

meditation
  سگالش   
segâleš (#)

Fr.: méditation   

The act of meditating. → consideration.

From L. meditatatus p.p. of meditari "to think over, reflect, consider," from PIE root *med- "to measure, limit, consider, advise," → mode.

Verbal noun of → meditate.

medium
  مدیم   
madim

Fr.: milieu   

An intervening substance through which an effect is produced; surrounding objects, conditions, or influences; environment. → interstellar medium.

From L. medium, from neut. of adj. medius "middle," from PIE *medhyo- "middle;" cf. Av. maδəma- "middle," as below.

Madim, from Av. maδəma- [adj.] "middle, being in the middle; middling, of a middling size or quality," maiδim "in the midst of," maiδyāna- "the middle;" cf. Skt. mádhya- "middle;" Gk. messos; Goth. midjis; O.E. midd "middle;" O.C.S. medzu "between," Arm. mej "middle;" L. medium, as above.

meet
  موازیدن   
mavâzidan

Fr.: renconter   

To come upon; come into the presence of; encounter.

M.E. meten, from O.E. metan "to find, find out; encounter; obtain," cognate with O.Frisian meta, O.Sax. motian "to meet," Goth. gamotijan, ultimately from PIE root *mod- "to meet, assemble."

Mavâzidan, from Sogd. mwz "to meet together, encounter" (Cheung 2007); ultimately from Proto-Ir. *ham-uaz-, from *ham- "together, → com-," + *uaz- "to move, carry, drive;" cf. Av. vaz- "to move, carry, drive (a chariot);" Pers. vazidan "to blow;" parvâz "→ flight."

meeting
  مواز   
mavâz

Fr.: rencontre   

1) The act of coming together.
2) An → assembly or conference of persons for a specific purpose (Dictionary.com).

meet; → -ing.

mega-
  مگا-   
megâ- (#)

Fr.: méga-   

1) Prefix, often meaning "large, great."
2) Prefix meaning 106.

From Gk. megas "great, large, mighty," from PIE *meg- "great;" cf. L. magnus, Goth. mikils, O.E. micel.

megaparsec (Mpc)
  مگاپارسک   
megâpârsek (#)

Fr.: mégaparsec   

A unit of distance equal to a million → parsec (pc)s, or 3.26 million → light-years.

mega-; → parsec.

megastructure
  مگاساختار   
megâsâxtâr

Fr.: mégastructure   

Same as → Dyson sphere.

mega-; → structure.

megatons of TNT
  مگاتن ِ TNT   
megâton-e TNT (#)

Fr.: megatonnes de TNT   

A unit of explosive force equal to one million metric tons of → T.N.T.. 1 megaton = 4.2 × 1022 → ergs = 4.2 × 1015 → joules.

mega-; → ton.

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).

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.

<< < -me mac mag mag mag mag mai man Mar mas mas mat May mea mec mem mer mes met met Mic mic mig Mim Min mis mod mod mol mon mor mov mul Mus > >>