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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Number of Results: 13048 Search : far
National Aeronautics and Space Administration (NASA)
  سازمان ِ فضانوردی ِ آمریکا   
Sâzmân-e Fazânavardi-ye Âmrikâ

Fr.: NASA, Administration nationale de l'aéronautique et de l'espace   

A federal agency of the United States government founded in 1958 for civil aeronautical research and space exploration, superseding the National Advisory Committee for Aeronautics (NACA). Its goals include improving human understanding of the universe, the solar system, and Earth and establishing a permanent human presence in space. NASA is headquarted at Washington, D.C., and operates several research, development, and test facilities, as follows alphabetically: 1) Ames Research Center; 2) Dryden Flight Research Facility at Edwards, California, used for flight testing and as a landing site for the Space Shuttle; 3) Glenn Research Center at Cleveland, Ohio, concerned with aircraft and rocket propulsion; 4) Goddard Space Flight Center; 5) Jet Propulsion Laboratory; 6) Johnson Space center; 7) Kennedy Space Center; 8) Langley Research Center at Hampton, Virginia, which carries out research in aeronautics and space technology; 9) Marshall Space Flight Center; 10) the Space Telescope Science Institute; 11) Stennis Space Center, near Bay St Louis, Mississippi, for testing rocket engines; and 12) Wallops Flight Facility on Wallops Island, Virginia, which manages NASA's sounding rocket and scientific balloon programs.

national; → aeronautics; → space; administration, verbal noun of administer, from M.E. amynistre, from O.Fr. aministrer, from L. administrare "to serve, carry out, manage," from → ad- "to" + ministrare "to serve," from minister "servant, priest's assistant," from minus, minor "less," hence "subordinate," + comparative suffix *-teros.

Sâzmân, → organization; fazâyi pertaining to fazâ, → space; Âmrikâ "United State of America."

nationalism
  نفان‌باوری   
nafânbâvari

Fr.: nationalisme   

Loyalty and devotion to a nation; especially: a sense of national consciousness exalting one nation above all others and placing primary emphasis on promotion of its culture and interests as opposed to those of other nations or supranational groups (Merriam-Webster.com).

national; → -ism.

nationality
  نفانیگی   
nafânigi

Fr.: nationalité   

1) National status; specifically: a legal relationship involving allegiance on the part of an individual and usually protection on the part of the state b : membership in a particular nation.
2) Membership in a particular nation (Merriam-Webster.com).

national; → -ity.

nationalization
  نفانش   
nafâneš

Fr.: nationalisation   

The transfer of a major branch of industry or commerce from private to state ownership or control (OxfordDictionaries.com)

nationalize; → -tion.

nationalize
  نفانیدن   
nafânidan

Fr.: nationaliser   

1) To bring under the ownership or control of a nation, as industries and land (Dictionary.com).

national; → -ize.

natural
  زاستاری   
zâstâri

Fr.: naturel   

Occurring in nature; not artificially prepared. → nature.

Adj. of → nature.

natural frequency
  بسامد ِ زاستاری   
basâmad-e zâstâri

Fr.: fréquence naturelle   

Any frequency of small-amplitude oscillation for a system with a position of stable equilibrium and in the absence of external forces. In other words, the frequency of → free oscillation. Also called characteristic frequency.

natural; → frequency.

natural history
  تاریخ ِ زاستاری   
târix-e zâstâri

Fr.: histoire naturelle   

The → sciences, as → botany, → mineralogy, or → zoology, dealing with the study of all objects in → nature: used especially in reference to the beginnings of these sciences in former times (Dictionary.com).

natural; → history.

natural language
  زبان ِ زاستاری   
zabân-e zâstâri

Fr.: langage naturel   

Linguistics: A language that has evolved naturally as a means of communication among people, as opposed to → artificial language and → formal language (Dictionary.com).

natural; → language.

natural line broadening
  پهنش ِ زاستاری ِ خط   
pahneš-e zâstâri-ye xatt

Fr.: élargissement naturel de raie   

The broadening of any spectral line due to the fact that excited levels have mean lives, which, by virtue of the uncertainty principle, implies a spread in the energy values.

natural; → line; → broadening.

natural logarithm
  لگاریتم ِ زاستاری   
logâritm-e zâstâri

Fr.: logarithme naturel   

The logarithm in which the → base is the → irrational number e = 2.718281828.... Also called → Napierian logarithm. The natural logarithm is denoted ln, an abbreviation of logarithmus naturalis. Natural logarithms are related to → common logarithms through: ln x = (1/M) log x, with M = (1/ln 10) ≅ 0.434294.

natural; → logarithm.

natural number
  عدد ِ زاستاری   
adad-e zâstâri

Fr.: nombre naturel   

Either a member of the set of positive integers 1, 2, 3, ..., or the set of non-negative integers 0, 1, 2, 3, ... There seems to be no general agreement about whether to include 0 in the set of natural numbers.

natural; → number.

natural period
  دوره‌ی ِ زاستاری   
dowre-ye zâstâri

Fr.: période naturelle   

Of a body or system, the period of → free oscillation.

natural; → period.

natural resonance
  باز‌آوایی ِ زاستاری   
bâzâvâyi-ye zâstâri

Fr.: résonance naturelle   

A resonance such that the period of the driving force is the same as the natural period of the system.

natural; → resonance.

natural satellite
  ماهواره‌ی ِ زاستاری   
mâhvâre-ye zâstâri

Fr.: satellite naturel   

A solar system → object that → revolves around a → primary body and is not man made.

natural; → satellite.

natural science
  دانش ِ زاستاری   
dâneš-e zâstâri

Fr.: science naturelle   

A science that deals with matter, energy, their interrelations and transformations, In other words, natural sciences are concerned with physical processes observable in nature. They can be divided into physical and biological sciences.

natural; → science.

natural units
  یکاهای ِ زاستاری   
yekâhâ-ye zâstâri

Fr.: unités naturelles   

Physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants (e.g. the speed of light, Planck's constant, Boltzmann's constant, etc.) are equal to unity. The use of natural units allows these constants to be omitted from mathematical equations, leading to simpler calculations.

natural; → unit.

natural uranium
  اورانیوم ِ زاستاری   
urâniom-e zâstâri

Fr.: uranium naturel   

Uranium as found in nature. It contains 0.7% uranium-235, 99.3% uranium-238, and a trace of uranium-234 by weight.

natural; → uranium.

naturalism
  زاستارگرایی، زاستارباوری   
zâstâr-gerâyi, zâstâr-bâvari

Fr.: naturalisme   

Philosophy: 1) The view of the world that takes account only of natural elements and forces, excluding the supernatural or spiritual.
2) The belief that all phenomena are covered by laws of science and that all teleological explanations are therefore without value (Dictionary.com).

natural; → -ism.

nature
  زاستار   
zâstâr

Fr.: nature   

The natural world as it exists without human beings or civilization.

M.E. natur(e), from O.Fr. nature from L. natura "the things at the outset, as it was when brought into existence; conditions of birth; essence, natural qualities," from natus "born," p.p. of nasci "to be born," from PIE *gen- "to give birth, beget," cognate with Pers. zâdan "to give birth," as below.

Zâstâr, literally "birth," from zâst past stem of [Dehxodâ] zâstan, variant of zâdan "to bring forth, give birth;" (Lâsgardi, Sorxeyi, Aftari) nestor "barren, sterile" (Mid.Pers. zâtan; Av. zan- "to bear, give birth to a child, be born," infinitive zazāite, zāta- "born;" cf. Skt. janati "begets, bears;" L. gignere "to beget," nasci "to be born," as above, PIE base *gen- "to give birth, beget") + suffix -âr (forming verbal nouns as in raftâr, kerdâr, goftâr, didâr, jostâr, and so on; or forming accusative nouns, as in gereftâr, koštâr, etc.).

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer AGB air Alf Alg all alp alt AM amo ana And ang ani ano Ant Ant apa apo app app Ara Arc ari Arr ash ass ast ast asy atm ato att aut ave axi Bab bal Bal bar bar bea Bek Bes bia Big bin bin bip biv bla bli blu Boh Bol Bos bou bra bri bro buo cal cal can cap car Car cat cat CCD Cen cen CH cha cha che Che chr cir cir cit cla clo clo clu Coa coe coh col col col com com com com com com com com Com con con con con con con con con con con con con Cop Cor cor cor cos cos cou cou Cow cre cri cro cry cur cya Cyg dan dar dat de- deb dec dec ded def deg del dem den dep des det dev dia dif dif dih dio Dir dis dis dis dis dis dis DO don dou dow dro dur dwa dyn Dys ear ebb ecl edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ esc eth Eur Eve exa exc exe exi exp exp ext ext ext fac fal far fed Fer fer fie fin fir fis fla flo flu fol for for fou fra fre Fre fro fut G-t gal gal gam gas Gau Gem gen geo geo geo gia Gli Gol gra gra gra gra gre gri gui H I Hag hal har hat He- hea hel Hel her Hes hie hig his hom hor hot Hub Hug hur hyd hyd hyg hyp ice ide ima Ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv Io ion iro isl iso iso Jac jet jud jur Kel Kep kil Klo Kui Lag lam Lap Lar lat law lea len lep Lib lig lim lin lin Lio lit loc LOF lon Lor low lum lun Lup Lyo mac mag mag mag mag mag mai man Mar mas mas mat Max mea mec Meg Mer Mer met met Met mic Mid Mil min Mir mit mod mod mol mon Mor mou mul mul mys nan Nat nau nec neo neu nev New NGC no nom non non nor not nuc nuc num nut obj obs obs occ ocu oft ome Oor ope opp opt opt orb ord ori ort osc out ove oxi pai pan par par par par pas pea pen per per per per Per per pha phi pho pho pho phy pio Pla pla pla pla Pla plu Poi pol pol pol poo pos pos pot pra pre pre pre pre pri pri pro pro pro pro pro Pro pro pse pul pur qua qua qua qua que rac rad rad rad rad rad rad ran rar ray rea rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot Rus Sac sal sat sca sca Sch sci Scu sec sec Sed sel Sel sen ser Sex Sha she sho sid sig sil sim sin siz sla Sma sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spi spr squ sta sta sta sta ste ste ste Sto Str str str sub sub suc sun sup sup sup sup sur swa syn syn tab tar tek tem ter tes the the the the Tho thr tid tim Tis Too Tor tra tra Tra tra tra tri tri tru Tul tur two Typ ult un- und uni uni unk upp Urc utt val var vec vel ver vib vio vir vis voi vor wan wat wav wax wea Wei whi Wil win WN9 wor X-r yel you zer zod > >>