An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 382
pendâré (#)

Fr.: notion   

A general understanding; vague or imperfect conception or idea of something.

From L. notio "concept, conception, idea," from noscere "to know," → knowledge.

Pendâré, noun from pendâštan "to imagine, consider, think," → imaginary number.


Fr.: nom   

A word or group of words that refers to a person, place, or thing or any syntactically similar word (Collins).

M.E. nowne; O.Fr. nom, non, from Latin nomen "name, noun," → name.

Nâmvâz "noun," from nâm, → name, + vâz "word," variants vâž, âvâz, vâj, vât, vâ, → voice.


Fr.: nourrir   

1) To sustain with food or nutriment; supply with what is necessary for life, health, and growth; feed.
2) To strengthen, build up, or promote (

M.E., from O.Fr. norriss-, stem of norrir "raise, bring up, nurture, foster; maintain, provide for," from L. nutrire "to feed, nurse, foster, support, preserve," from *nutri, older form of nutrix "nurse,") literally "she who gives suck."

Fâridan, from the Fârs province dialects Sivandi fâr- and Xori fôr- "to eat," probably development of Proto-Ir. *hu- "to eat" (Av. xvar-, Pers. xordan, → feed) to f-, also Tajiki furt-, fə- "to gulp, swallow," maybe from a separate root (Cheung 2007).


Fr.: nourriture   

1) Something that nourishes; food, nutriment, or sustenance.
2) The act of nourishing. The state of being nourished (

M.E. norysshement, from M.Fr. norissement, → nourish, → -ment.

Fârmân, noun from fâridan (like sâzmân, sâxtemân, câymân, râžmân, and others).

  نووا، نو‌اختر   
novâ, now-axtar (#)

Fr.: nova   

A star that experiences a sudden increase in → luminosity, by a s much as 106. The → outburst ejects a shell of matter but does not disrupt the star.

Nova, from L. stella nova "new star," from stellastar + nova, fem. of novusnew.

Novâ, from now, → new; now-axtar "new star," from now, as above, + axtar, → astro-.

  نوال، رمان   
novâl, român (#)

Fr.: roman   

A fictitious prose narrative of considerable length and complexity, portraying characters and usually presenting a sequential organization of action and scenes (

From It. novella (storia) "new kind of story," from L. novellus "new, young, recent," → new.

Novâl, from now, → new, + -âl, → -al. Român, from Fr. roman, from V.L. *romanice "in the manner of Romans."


Fr.: 1) bec; 2) tuyère   

1) Tha end part of a → pipe, → hose, or → tube through which a → stream of → fluid is directed.
2) A part in a → rocket → engine that accelerates the exhaust gases from the combustion chamber to a high → velocity.

M.E. noselle, diminutive of → nose.

Kalap "the beak of a bird" (Biruni, at-Tafhim), may be from *galap-, ultimately from Proto-Ir. *ui-lap-; cf. Mid.Pers. lap "lip," Mod.Pers. lab cognate with L. labium, E. lip.

nozzle throat
  گلو‌ی ِ کلپ   
galu-ye kalap

Fr.: col de tuyère   

The portion of a nozzle with the smallest → cross section.

nozzle; → throat.


Fr.: nuance   

1) A subtle difference or distinction in expression, meaning, response, etc.
2) A very slight difference or variation in color or tone (

From Fr. nuance "shade of color, hue," from nuer "to shade," from nue "cloud," from L. nubes "a cloud, mist, vapor," → nebula.

Sâgen, from Xoyini sâgené "shade, shadow," related to sâyé, → shadow.

haste-yi (#)

Fr.: nucléaire   

Of or pertaining to a → nucleus.

From nucle(us), → nucleus, + -ar variant of the adjective-forming suffix → -al.

Haste-yi, from hasté, → nucleus, + -i adjective-forming suffix.

nuclear barrier
  ورغه‌ی ِ هسته‌ای   
varqe-ye haste-yi (#)

Fr.: barrière nucléaire   

The region of high potential energy through which a charged particle must pass on entering or leaving an atomic nucleus. → Gamow barrier.

nuclear; → barrier.

nuclear burning
  سوزش ِ هسته‌ای   
suzeš-e haste-yi

Fr.: combustion nucléaire   

A → nuclear reaction inside a star that produces the energy to make the star shine and also transform chemical elements into others.

nuclear; → burning.

nuclear charge
  بار ِ هسته‌ای   
bâr-e haste-yi (#)

Fr.: charge nucléaire   

The positive electric charge on the nucleus of an atom.

nuclear; → charge.

nuclear combustion
  سوزش ِ هسته‌ای   
suzeš-e haste-yi

Fr.: combustion nucléaire   

nuclear burning.

nuclear; → combustion.

nuclear cross-section
  سکنج‌گاه ِ هسته‌ای   
sekanjgâh-e hasteyi

Fr.: section efficace nucléaire   

Apparent cross-section possessed by an atomic nucleus when it undergoes a particular type of collision process.

nuclear; → cross section.

nuclear density
  چگالی ِ هسته‌ای   
cagâli-ye haste-yi (#)

Fr.: densité nucléaire   

The density of an atomic nucleus (about 1014 g/cm3).

nuclear; → density.

nuclear energy
  کاروژ ِ هسته‌ای   
kâruž-e haste-yi

Fr.: énergie nucléaire   

Energy released during a nuclear reaction as the result of the conversion of mass into energy. → mass-energy equivalence.

nuclear; → energy.

nuclear fission
  شکافت ِ هسته‌ای   
šekâft-e haste-yi (#)

Fr.: fission nucléaire   

A → nuclear reaction in which a heavy atomic nucleus splits into two or more approximately equal parts, usually as the result of the capture of a slow, or → thermal neutron by the nucleus. It is normally accompanied by the emission of further neutrons or → gamma rays and very large amounts of energy. The neutrons can continue the process as a → chain reaction, so that it becomes the source of energy in a → nuclear reactor or an atomic bomb. It may also be a trigger for → nuclear fusion in a hydrogen bomb. Fission occurs spontaneously in nuclei of uranium-235, the main fuel used in nuclear reactors.

nuclear; → fission.

nuclear force
  نیروی ِ هسته‌ای   
niru-ye haste-yi (#)

Fr.: force nucléaire   

The attractive force which acts between nucleons when they are extremely close together (closer than 10-13 cm).

nuclear; → force.

nuclear fuel
  سوخت ِ هسته‌ای   
suxt-e haste-yi (#)

Fr.: combustible nucléaire   

A substance, such as uranium-238 or plutonium-239, which undergoes nuclear fission in a nuclear reactor.

nuclear; → fuel.

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