An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian
فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک
M. Heydari-Malayeri - Paris Observatory
Homepage<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB 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 coo cor cor cor Cos cos cos cou cou cra cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl 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 inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc qua qua qua qua qui rad rad rad rad rad rad rai 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 rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl ura uti val var vec vel ver Ver vie vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>
n-body problem parâse-ye n-jesm Fr.: problème de n-corps The mathematical problem of studying the behavior (e.g., velocities, positions) of any number of objects moving under their mutual gravitational attraction for any time in the past or future. Same as the → many-body problem. |
n-type conductivity hâzandegi-ye gune-ye n Fr.: conductivité de type n The conductivity in a semiconductor caused by a flow of electrons, whereas p-type conductivity is caused by a flow of holes. n standing for → negative; → type; → conductivity. |
N66 N66 Fr.: N66 The largest and the most luminous → H II region in the → Small Magellanic Cloud, which contains the prominent OB star cluster → NGC 346. N66 has a diameter of about 7 arcmin on the sky corresponding to about 120 pc for a distance of about 60 kpc. Compared with the → Orion Nebula, N66 has an Hα luminosity almost 60 times higher. Serial number in the Henize (1956) catalog, more precisely designated as LHA 115-N66. |
Na I D-line xatt-e D-ye Na I Fr.: raie D de Na I → D line. |
Na'ir al-Saif Nayyer alseyf Fr.: Na'ir al Saif Same as → Iota Orionis. From Ar. Nayyir al-Saif ( |
nabla nâblâ (#) Fr.: nabla The mathematical symbol for the → del operator. From Gk. nabla an ancient stringed instrument, triangular in shape and held like a harp, thus of the shape of ∇. |
NaCO (NAOS-CONICA) Fr.: NaCO (NAOS-CONICA) An → adaptive optics instrument at the → European Southern Observatory (ESO) → Very Large Telescope (VLT) in service since 2001. It provides adaptive optics assisted imaging, imaging polarimetry, and → coronagraphy (only L) in the 1-5 μm range. It consists of two components: NAOS (Nasmyth Adaptive Optics System) and CONICA (COudé Near Infrared CAmera). The adaptive optics system, NAOS, is equipped with both → visible and → infrared→ wavefront sensors. It contains five → dichroic filters which split the light from the telescope between CONICA and one of the NAOS wavefront sensors. CONICA is the → infrared camera and → spectrometer attached to NAOS and equipped with an Aladdin 1024 × 1024 pixel InSb array detector. It possesses several wheels carrying masks/slits (including focal plane coronagraphic masks), filters, polarizing elements, → grisms and several cameras allowing → diffraction-limited sampling across the full wavelength range. NaCo, from NAOS (→ Nasmyth, → adaptive; → optics; → system) + CONICA (→ coude; → near-infrared; → camera). |
nadir pâsu (#) Fr.: nadir The point on the celestial sphere
blocked from view by Earth and diametrically opposite to the
→ zenith ( From M.L. nadir, from Ar. nazir "opposite to," contraction of
nazir as-samt ( Pâsu, literally "direction of the foot," from pâ "foot, step" (from Mid.Pers. pâd, pây; Khotanese fad; Av. pad- "foot;" cf. Skt. pat; Gk. pos, genitive podos; L. pes, genitive pedis; P.Gmc. *fot; E. foot; Ger. Fuss; Fr. pied; PIE *pod-/*ped-) + su "direction, side" (from Mid.Pers. sôk "direction, side"). |
nail 1) mix (#); 2) nâxon (#) Fr.: 1) clou; 2) ongle 1) A small metal spike with a broadened flat head, driven into wood to join
things together or to serve as a hook. M.E. nail(l), nayl(l), O.E. negel "metal pin," nægl "fingernail;" cf. O.Norse nagl "fingernail," nagli "metal nail;" O.H.G. nagel, M.Du. naghel, Du. nagel, Ger. Nagel "fingernail, small metal spike;" from PIE root *h3nogh- "nail" (source also of Gk. onyx "claw, fingernail;" L. unguis (Fr. ongle, from diminutive L. ungula) "nail, claw;" Pers. nâxon, as below; Lithuanian naga "hoof," nagutis "fingernail." 1) Mix, from Mid.Pers. mêx "peg, nail;" O.Pers.
mayūxa- "doorknob;" cf. Skt. mayūkha-
"peg for stretching the woof"). |
naked berehné (#) Fr.: nu Not accompanied or supplemented by anything else. → naked eye, → naked singularity, → naked-eye star. O.E. nacod "nude;" cf. M.Du. naket, Du. naakt, Ger. nackt, cognate with Pers. berehné, as below, , from PIE base *negw-no- "naked." Berehné, from Mid.Pers. brahnag (with secondary -r-) "naked;" Av. maγna- "naked;" cf. Skt. nagná- "naked;" Gk. gumnos "naked;" L. nudus "naked;" Arm. merk "naked;" Lith. nuogas "naked;" |
naked eye cašm-e berehné (#) Fr.: œil nu The qualifier of an eye which is not assisted by any optical device, except for eyeglasses. Same as → unaided eye. |
naked singularity takini-ye berehné (#) Fr.: singularité nue A singularity that is not surrounded by an event horizon. It will therefore be visible and communicable to the outside world. → naked; → singularity. |
naked-eye star setâre-ye cašm-e berehné Fr.: étoile visible à l'œil nu A star visible without a telescope. In principle, stars down to about sixth magnitude are visible to the naked eye under ideal conditions, but this depends on the individual, the location, and the conditions of the observation. |
name nâm (#) Fr.: nom A word or term by which somebody or something is commonly and distinctively known. M.E., from O.E. nama; cf. O.H.G. namo, Ger. Name, Du. naam, Goth. namo "name;" cognate with Pers. nâm, as below. Nâm "name;" Mid.Pers. nâm; O.Pers./Av. nâman-; cf. Skt. nama-; Gk. onoma, onuma; L. nomen; PIE *nomen-. |
nano- nâno- (#) Fr.: nano- A prefix denoting 10-9. Combining form of Gk nanos "dwarf." |
nanodiamond nâno-almâs Fr.: nano-diamant The most stable carbon compound with an average particle size of about 5 → nanometers (50 Å). Nanodiamonds are synthesized by detonation of → T.N.T. and then gathering the soot that remains from the explosion. |
nanodust nâno-qobâr Fr.: nano-poussière Dust grains at → nanoscale sizes found in various astrophysical environments, such as → interstellar medium and → interplanetary space of our Solar System. |
nanometer nânometr (#) Fr.: nanomètre A unit of length equal to 10-9 m, or 10 Å. |
nanoparticle nâno-zarré Fr.: nano-particule A solid particle of → nanoscale size; e.g. a → nanodust grain. |
nanoscale nâno-marpel Fr.: nano-échelle The size range from approximately 1 → nanometer (nm) to 100 nm. |
<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB 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 coo cor cor cor Cos cos cos cou cou cra cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl 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 inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc qua qua qua qua qui rad rad rad rad rad rad rai 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 rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl ura uti val var vec vel ver Ver vie vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>
