An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 374
North America Nebula
  میغ ِ آمریکای ِ هودری   
miq-e Âmrikâ-ye hudari

Fr.: Nébuleuse de l'Amérique du Nord   

An → H II region in → Cygnus, also known as NGC 7000, resembling the continent North America in long exposure images. This nebula is lying three degrees from bright star → Deneb and spans on the sky over four times the angular size of the full Moon. A dark lane separates the North America Nebula from the → Pelican Nebula, actually part of the same enormous cloud some 2,000 → light-years away.

It was first photographed in 1890 by Max Wolf (1863-1932), a German astronomer, who also first called it the North America Nebula because of its resemblance to the Earth's continent. America, from the feminine of Americus, the Latinized first name of the explorer Amerigo Vespucci (1454-1512), who made two trips to the New World as a navigator and claimed to have discovered it. The name America first appeared on a map in 1507 by the German cartographer Martin Waldseemüller, referring to the area now called Brazil; → nebula.

north celestial pole
  قطب ِ آسمانی ِ هودر   
qotb-e âsmâni-ye hudar

Fr.: pôle nord céleste   

The point in the → northern hemisphere where the → rotation axis of Earth touches the → celestial sphere. The star → Polaris, also called the Pole Star, is located very near this point, at an angular separation of 42 degrees (about 1.4 lunar diameters).

north; → celestial; → pole.

North Polar Spur
  شخاک ِ کهکشانی ِ هودری   
šaxâk-e kahkešâni-ye hudari

Fr.: éperon galactique nord   

One of the largest coherent structures in the radio sky, projecting from the → Galactic plane at → Galactic longitudel ~ 20° and extending to a very high → Galactic latitudeb ~ +80°. It was first identified in low frequency → radio surveys in the 1950s. The spur is also prominent in → soft X-rays. Its origins and nature have long been debated. However, what causes this phenomena is not well understood. It may be due to a combination of → OB associations and → supernova explosions.

north; → polar; → spur.

north pole
  قطب ِ هودر   
qotb-e hudar

Fr.: pôle nord   

1) An → imaginary → point in the → northern hemisphere representing the intersection of the → Earth's → rotation axis with the → globe or with the → celestial sphere.
2) For a → magnet, the pole which points toward the geographic north.
3) In a → magnetic field, the point from where a → line of force is leaves for the → south pole.

north; → pole.


Fr.: nord   

1) Lying toward or situated in the → north.
2) North of the → celestial equator or of the → zodiac.

M.E., from O.E. norþerna, norðerne "northern," from norð "northern" + + -erne, suffix denoting direction

Hudari, relating to hudar, → north.

Northern Cross
  چلیپای ِ هودری   
calipâ-ye hudari

Fr.: Croix du Nord   

An arrangement of stars in the form of a cross in the constellation → Cygnus.

north; → cross.

northern hemisphere
  نیم‌سپهر ِ هودری   
nimsepehr-e hudari

Fr.: hémisphère nord   

The half of the → Earth or another → astronomical object between the → north pole and the → equator.

northern; → hemisphere.

  ۱) دماغ، بینی؛ ۲) دماغه   
1) damâq (#), bini (#); 2) damâqé (#)

Fr.: nez   

1) The part projecting above the mouth serving as the organ of breathing and smelling.
2) Something like a nose in shape or position, especially the front end of an → aircraft. See also → nozzle.

M.E.; O.E. nosu (O.N. nös; Du. neus; O.H.G. nasa; Ger. Nase); PIE root *nas- "nose;" cf. Skt. nasa; O.Pers. naham; L. nasus; O.C.S. nasu; Lith. nosis.

1) Damâq, ultimately from Proto-Ir. *damaka-, from *damH- "to breathe, to blow;" cf. Pers. dam-, damidan "to breathe, to blow;" Av. dāδmainya- "blowing up;" cf. Skt. dahm- "to blow," dhámati "blows;" Gk. themeros "austere, dark-looking;" Lith. dumti "to blow;" PIE dhem-/dhemə- "to smoke, to blow."
Bini "nose;" Mid.Pers. wênig "nose" (Av. vaēna- "nose"), related to wên "breath;" cognate with jân "vital spirit, soul," → animate.
2) Damâqé, from damâq + nunace suffix .

  نه، نا، نی   
na, nâ, ni

Fr.: non; ne ... pas   

A → particle used to express → negation, → denial, refusal, or prohibition.

Not, variant of noht, naht "in no way," from O.E. nawiht "nothing" (from na "no, never" + whit "whit"), akin to Pers. na, nâ, as below.

Na "no, not," variants nâ, ni,ma- (prohibitive) "not;" from Mid.Pers. nê, ma "no, not;" O.Pers. naiy, nai "not;" Av. nôit, naē "not;" cf. Skt. "not;" cf. L. ne-, in-, un-; Gk. ni; Lith. ; O.C.S. ne "not;" E. not, as above; PIE *ne-.

namâdgân (#)

Fr.: notation   

Representation of numbers, quantities, or other entities by symbols; a system of symbols for such a purpose.

From L. notationem (nom. notatio) "a marking, explanation," from notatus, p.p. of notare "to note."

Namâdgân, from namâd, → symbol, + -gân suffix denoting order, organization, multiplicity.

not (#)

Fr.: note   

Musical sound of specified frequency (pitch) produced by a musical instrument, voice, etc.

From M.E., from O.F., from M.L. nota "sign for musical tone; mark, sign, lettering."

Not, loanword from Fr.

hic (#)

Fr.: rien   

1) No thing; not anything; naught.
2) Nonexistence; nothingness.

M.E., from O.E. nathing, nathinc, from nan "not one," → non-, + → thing.

Mid.Pers. hêc, hêc(i), hâca "any."

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.

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