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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<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir 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 coo cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>

Number of Results: 12948 Search : far
Henyey method
  روش ِ هنی   
raveš-e Henyey

Fr.: méthode de Henyey   

A powerful numerical technique to solve the stellar structure equations where the star is sub-divided in a finite number of grid cells for which the local conditions are evaluated and computed from the surface inwards to the center by utilizing a Newton-Raphson solver. Relevant physical quantities are either defined at the cell boundaries or as mean values over the complete cell.

Henyey, L. G.; Forbes, J. E.; Gould, N. L., 1964, ApJ 139, 306; → method.

Henyey track
  تر ِ هنی   
tor-e Henyey

Fr.: trajet de Henyey   

A nearly horizontal path on the → Hertzsprung-Russell diagram that a → pre-main sequence star of small mass follows in an early stage of evolution after leaving the → Hayashi track and before reaching the → main sequence. During this stage the pre-main sequence star remains almost wholly in radiative equilibrium.

After Louis George Henyey (1910-1970), American astronomer. Henyey et al. (1955, PASP 67, 154).

hepta-
  هفت-   
haft- (#)

Fr.: hepta-   

A combining form meaning "seven."

From Gk. hepta "seven;" cognate with L. septem; Pers. haft, as below; Du. zeven, O.H.G. sibun, Ger. sieben, E. seven.

Haft-, from haft "seven;" Mid.Pers. haft; Av. hapta; cf. Skt. sapta; Gk. hepta, L. septem; PIE *septm.

heptagon
  هفت‌بر، هفت‌گوش   
haftbar (#), haftguš (#)

Fr.: heptagone   

A → polygon with seven → angles and seven → sides.

hepta-; → -gon.

Herbig AeBe star
  ستاره‌ی ِ هربیگ ِ AeBe   
setâre-ye Herbig-e AeBe (#)

Fr.: étoile de Herbig AeBe   

A young → A-type or → B-type star showing → emission lines in its spectrum. Herbig AeBe stars are → pre-main sequence stars of → intermediate mass (→ intermediate-mass star). They are often called the higher mass counterparts of → T Tauri stars.

Named after George H. Herbig (1920-2013), who first classified them (Herbig 1960, ApJS 4, 337); → A star; → B star; e indicating → emission.

Herbig-Haro object
  بر‌آخت ِ هربیگ-هارو   
barâxt-e Herbig-Haro

Fr.: objets Herbig-Haro   

A small patch of → nebulosity in a → star-forming region, created when fast-moving → jets of material (with speeds up to about 1000 km per sec) from a newborn star collide with the → interstellar medium.

Herbig AeBe star; Guillermo Haro (1913-1988), who first in 1940s studied these objects in detail and recognized that they were a by-product of the star formation process; → object.

Hercules
  هراکلس، هرکول، برزانو نشسته   
Herâkles (#), Herkul (#), bar zânu nešasté (#)

Fr.: Hercule   

An ancient → constellation (right ascension about 17h, declination 30° north), one of the largest in the sky, which is located between → Lyra and → Corona Borealis. It is traditionally depicted as the hero Hercules in a kneeling position. There are no very bright stars in Hercules, the brightest one is → Rasalgethi, a variable → red supergiant of magnitude about 3.5. Abbreviation: Her; Genitive: Herculis.
See also: → Hercules cluster.

L. Hercules, from Gk. Heracles "glory of Hera," the most popular hero of Gk. mythology, son of Zeus and the woman Alcmena, who the god seduced in the shape of her husband Amphitryon, king of Thebes.

Herâkles, as above; Herkul, from Fr. Hercule, as above; Arabicized name of the constellation: هرقل. Other Ar. renderings: (al-jâthi, jâthi 'alâ rukbataihi (الجاثی، الجاثی علی‌رکبتیه) "the kneeling one," râqes (راقص) "the dancing one."
Bar zânu nešasté "the kneeling one," Pers. descriptive rendering of the Gk. mythological figure, by the famous 11-th century astronomer Biruni.

Hercules cluster
  خوشه‌ی ِ هراکلس، ~ هرکول   
xuše-ye Herâkles, ~ Herkul

Fr.: amas d'Hercule   

A small, irregular → cluster of galaxies with fewer than 100 galaxies in its core. It has no strongly dominant central galaxy and is notable for the high proportion of spirals. It lies some 500 million → light-years away in the constellation → Hercules; also known as Abell 2151.

Hercules; → cluster.

hereditable
  ریگن‌بردنی، دریگیدنی   
riganbordani, darigidani

Fr.: dont on peut hériter, qui peut hériter   

inheritable.

inherit; → -able.

hereditary
  ریگن‌داشتی، ریگنداشتی   
rigandâšti

Fr.: héréditaire   

1) Passing, or capable of passing, naturally from parent to offspring through the genes: Blue eyes are hereditary in our family.
2) Of or relating to inheritance or heredity (Dictionary.com).

Of or relating to → heredity.

heredity
  ریگن‌داشت، ریگنداشت   
rigandâšt

Fr.: hérédité   

The passing on of physical or mental characteristics genetically from one generation to another (OxfordDictionaries.com).

M.E., from M.Fr. hérédité, from O.Fr. eredite "inheritance, legacy," from L. hereditatem (nominative hereditas) "heirship, inheritance," → heritage.

Rigandâšt, literally "possessing heritage," from rigan, → heritage, + dâšt past stem of dâštan "to have, hold, possess, maintain," → property.

heritable
  ریگن‌بردنی، دریگیدنی   
riganbordani, darigidani

Fr.: dont on peut hériter, qui peut hériter   

inheritable.

inherit; → -able.

heritage
  ریگن   
rigan

Fr.: héritage   

1) Something inherited at birth, such as personal characteristics, status, and possessions.
2) Anything that has been transmitted from the past or handed down by tradition (Dictionary.com).

M.E. from M.Fr., from O.Fr. iritage, eritage, heritage "heir; inheritance, ancestral estate, heirloom," from heriter "inherit," from L.L. hereditare, ultimately from L. heres (genitive heredis) "heir, heiress," from PIE root *ghe- "to be empty, left behind" (related Gk. word khera "widow").

Rigan from rig "left, abandoned" (in mordé rig "heritage, effects of a dead person, anything hereditary, heirloom") + noun suffix -an (as in rowzan, rowšan, suzan, rasan, zaqan, hâvan, etc.); ultimately from Proto-Ir. *raic- "to leave, abandon;" cf. Av. raēc- "to leave, let;" Mid.Pers. (+ *pati-) phryz-, Mod.Pers. parhêz, parhiz "to keep away from, abstain, avoid;" Khotanese (+ *fra-) hars- "to be left, remain;" Mod.Pers. rištan "to set at liberty, absolve;" Mid.Pers. (+ *ui-) wirēz-, Mod.Pers. gurēz, goriz, gurēxtan, gorixtan "to flee, run away;" Gk. leipein "to leave;" L. linquere "to leave;" PIE *leikw- "to leave, let" (Cheung 2006).

hermaphrodite
  نرماده   
narmâde (#)

Fr.: hermaphrodite   

Biology: An individual, animal, or plant possessing both male and female reproductive organs.

From L. hermaphroditus, from Gk. hermaphroditos the mythical son of Hermes and Aphrodite who merged bodies with a naiad and thereafter possessed both male and female qualities.

Narmâde, literally "male-female," → male, → female.

hermaphroditism
  نرمادگی   
narmâdegi (#)

Fr.: hermaphroditisme   

Biology: For an animal or plant, the condition of having both male and female reproductive tissue or organs.

hermaphrodite; → -ism.

hermeneutic
  آزندپردازیک   
âzand-pardâzik

Fr.: herméneutique   

Of or related to hermeneutics, interpretative; explanatory. Also hermeneutical.

hermeneutics.

hermeneutics
  آزندپردازیک   
âzand-pardâzik

Fr.: herméneutique   

The science or art of → interpretation. Originally the term was limited to the interpretation of the Scriptures, but since the nineteenth century it has developed into a general theory of human understanding through the work of Friedrich Schleiermacher (1768-1834), Wilhelm Dilthey (1833-1911), and others. The comprehension of any written text requires hermeneutics. Many different hermeneutic theorists have proposed many different methodologies.

From Gk. hermeneutikos "interpreting," from hermeneutes "interpreter," from hermeneuein "to interpret," of unknown origin. It was formerly thought to derive from Hermes, the tutelary divinity of speech, writing, and eloquence.

Âzand-pardâzik, from âzand, → interpretation, + pardâz, present stem of pardâxtan "to accomplish, bring to perfection; to care," → theoretician, + -ik, → ics.

hermeneutist
  آزندپرداز   
âzandpardâz

Fr.: herméneutiste   

Someone who interprets literary or scriptural texts.

Agent noun from → hermeneutics

Hermitian conjugate
  همیوغ ِ اِرمیتی   
hamyuq-e Hermiti

Fr.: conjugé hermitien   

Math.: The Hermitian conjugate of an m by n matrix A is the n by m matrix A* obtained from A by taking the → transpose and then taking the complex conjugate of each entry. Also called adjoint matrix, conjugate transpose. → Hermitian operator.

Hermitian, named in honor of the Fr. mathematician Charles Hermite (1822-1901), who made important contributions to number theory, quadratic forms, invariant theory, orthogonal polynomials, elliptic functions, and algebra. One of his students was Henri Poincaré; → conjugate.

Hermitian operator
  آپارگر ِ اِرمیتی   
âpârgar-e Hermiti

Fr.: opérateur hermitien   

An operator A that satisfies the relation A = A*, where A* is the adjoint of A. → Hermitian conjugate.

Hermitian conjugate; → operator.

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir 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 coo cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>