An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



<< < -ne nan nat nav nec Nep neu New New NGC nob nom non non nor nou nuc nuc num Nyq > >>

Number of Results: 381

Fr.: normalisation   

1) A mathematical technique for adjusting a series of values (typically representing a set of measurements) according to some transformation function in order to make them comparable with some specific point of reference.
2) Process of introducing a numerical factor into an equation so that the area under the corresponding graph (if finite) shall be made equal to unity.
3) To change in scale so that the sum of squares or the integral of squares of the transformed quantity is zero.

Verbal noun of → normalize.

  هنجاروریدن، هنجارور کردن   
hanjârvaridan, hanjârvar kardan

Fr.: normaliser   

To change in scale so that the sum of squares, or the integral of the square, of the transformed quantity is unity.

normal + → -ize.

  هنجاروریده، هنجارور شده   
hanjârvaridé, hanjârver šodé

Fr.: normalisé   

The quality of something that has undergone → normalization.

P.p. of → normalize.

normalized Hubble parameter
  پارامون ِ هابل ِ هنجاروریده   
pârâmun-e Hubble-e hanjârvaridé

Fr.: paramètre Hubble normalisé   

A dimensionless parameter expressed by h(z) = H(z)/H0, where H(z) is the → Hubble parameter at → redshift z and H0 is the → Hubble constant.

normalized; → Hubble; → parameter.


Fr.: nord   

The → cardinal point at which the → meridian cuts the → horizon below the → north celestial pole.

M.E., O.E. norð, from P.Gmc. *nurtha- (cf. O.N. norðr, M.Du. nort, Du. noord, Ger. nord), ultimately from PIE *ner- "left, below."

Note: North is related to left since it is to the left when one faces the rising Sun. This occurs in, for example, the etymology of E. north, as above. The same goes for Ar. shimal, which also means "left."
Hudar, from hu(y), from Mid.Pers. hôy "left, left hand," from Av. haoiia- "left" (cf. Skt. savyá- "left hand;" O.C.S. šuji; Rus. šuj; Welsh aswy; PIE *seujos) + -dar, from -tar direction suffix, as in Mid.Pers. ošastar "east" (Av. ušastara- "easthern"), dôšastar "west" (Av. daôšatara-, daôšastara- "western"), abâxtar "north" (Av. apāxtara- "northern"), Mod.Pers. bâxtar, → west.

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 Layered Deposits (NPLD)
  لردهای ِ لایه-لایه‌ی ِ قطب ِ هودر   
Lerdhâ-ye Laye-laye-ye Qotb-e Hudar

Fr.: couches de dépôt du pôle nord   

A large area of the north polar region of Mars which is covered with alternating layers of water ice and dust. → South Polar Layered Deposits.

north; → polar; → layer; → deposit.

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-; Av. nāh-; O.Pers. nāham; L. nasus; O.C.S. nasu; Lith. nosis. See also → nostril.

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 + nuance suffix .


Fr.: narine   

Either of the two external openings of the → nose; a naris.

M.E. nostrill, nosethirl, O.E. nosthyrl, literally "the hole of the nose," from nosu "nose"+ thyrel "hole."

Nâge, from (Fârs Province) Khuri nog, nug "nose," variants Sabzevâri nos, Shushtari, Bovir Ahmadi, Lori neft "nose;" Mid.Pers. nâk "nose;" cf. Sogd. nêc "nose, nostril" (from *nāhika-) O.Pers. nāh-, Av. nāh- "nose;" cognate with E. → nose.

  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.

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