A suffix meaning "like, resembling," used in the formation of adjectives and nouns; e. g. asteroid, cycloid, ellipsoid.
From Gk. -oeides, from eidos "form," related to idein "to see," eidenai "to know;" PIE *weid-es-, from base *weid- "to see, to know;" cf. Pers. bin- "to see" (present stem of didan); Mid.Pers. wyn-; O.Pers. vain- "to see;" Av. vaēn- "to see;" Skt. veda "I know."
Suffix -vâr denoting "resembling, like," from Mid.Pers. -wâr, Av. -vara, -var, cf. Skt. -vara.
1) Suffix used in the names of subatomic particles (electron, proton, neutron, gluon, etc.),
quanta (photon, graviton, etc.), and other minimal entities or components.
1) Probably extracted from → ion.
-gar (#), -gâr (#), -kâr (#), -âr (#), -andé (#)
A suffix forming agent nouns, occurring originally in loanwords from Anglo-French; it now functions in E. as an orthographic variant of -er.
From M.E., from O.Fr. -o(u)r, from L. or-, extracted from -tor; Gk. -tor (e.g. dotor "giver," genetor "begetter," ktistor "founder"); cf. Av. -tar- (dātar- "giver," astar- "thrower," baxtar- "tributor"); Skt. -tr- (kartr- "doer," dhātr- "founder," astr- "thrower").
Agent suffix -gar, variant -gâr, -kâr, from kar-, kardan "to do, to make" (Mid.Pers. kardan; O.Pers./Av. kar- "to do, make, build;" Av. kərənaoiti "makes;" cf. Skt. kr- "to do, to make;" krnoti "makes," karma "act, deed;" PIE base kwer- "to do, to make"). Suffix -âr, as in parastâr, xaridâr, foruxtâr, virâstâr, xâstâr, nemudâr. Agent suffix -andé, used with verbs.
-i, -mand, -nâk, -var
A suffix forming adjectives that have the general sense "possessing, full of, inclined to." Variant -ious.
M.E., from O.Fr. -ous, -eux, from L. -osus.
setâre-ye O (#)
Fr.: étoile de type O
A luminous, hot, blue star whose spectrum is dominated by the lines of hydrogen, atomic helium, and ionized helium; also known as O-type star. This is the earliest → spectral type and the only → main sequence star in which ionized helium is present. The → effective temperatures of these stars range from about 30,000 K to 50,000 K, their luminosities from 50,000 to 1,000,000 times that of → solar luminosity, and their masses from about 20 to 100 → solar masses. The hottest O-type stars display high ionization emission features such as N III and He II, → Of star. They are divided into subtypes O2, the hottest, to O9.7, the coldest. O-type stars are relatively rare, for each star of 100 solar masses there are 106 stars of solar mass. They are relatively short-lived since they spend only a few million years on the main sequence. The brightest O-type star in the sky visible with naked eye is → Alnitak. For prominent Galactic O stars see → HD 93129.
O, letter of alphabet used in the Harvard spectral classification; → star.
Fr.: point O
O, the round letter of alphabet; → point.
setâre-ye gune-ye O
Fr.: étoile de type O
Same as → O star.
Fr.: association OB
A loosely bound grouping of O and B stars that typically stretches up to several hundred → light-years and may contain between a dozen and several hundred → O stars and → B stars. The members of an OB association are young and of roughly the same age. OB associations dissipate in a few tens of millions of years.
O and B, from spectral types; → association.
Fr.: étoile OB
A collective designation for massive O and B stars.
OB subdwarf (sdOB)
Fr.: sous-naine OB
Fr.: étoile OBC
From Gk. obelus "sharpened stick, spit, pointed pillar," related to obelisk, originally used in ancient manuscripts to mark passages that were suspected of being corrupted, doubtful, or spurious.
The outermost of Uranus' large satellites and the second largest. It has a diameter of 523 km and orbits 583,420 km from its planet. Compared to Uranus' moons Ariel, Titania, and Miranda, Oberon is heavily cratered. Like all of Uranus' large moons, Oberon is composed of roughly half ice and half rock. Oberon was discovered by Herschel in 1787.
Oberon is the King of the Fairies and husband of Titania in Shakespeare's Midsummer-Night's Dream.
1, 2, 3, 4, 5, 6) barâxt; 7) kondâr
1) General: Anything that is visible or tangible.
From M.L. objectum "thing thrown down or put before" (the mind or sight), neutral of objectus, p.p. of obicere "to present, oppose, cast in the way of," from ob "against" + jacere "to throw," from PIE base *ye- "to do" (cf. Gk. iemi, ienai "to send, throw," Hitt. ijami "I make").
Barâxt "thing drawn against, before" from bar- + âxt.
The prefix bar- "on; upon; against;
before; at; in," from Mid.Pers. abar, O.Pers.
upariy "above; over, upon, according to," Av. upairi "above, over"
(upairi.zəma- "located above the earth"), cf. Gk. hyper- "over, above,"
L. super-, O.H.G. ubir "over;" PIE base *uper "over".
The → lens or lenses in the → object end of the body tube of a → microscope, by means of which the rays coming from the object examined are brought to a focus. Same as → objective. An old term for the → objective lens of a → refracting telescope.
Fr.: langue objet
Any language described by a → metalanguage. For example, the sentence "In Persian, the word setâré means "star" " is part of a metalanguage (here, English), and the language described (namely Persian) is an object language. Metalanguage and object language may be identical.
Fr.: espace objet
Fr.: programme orienté objet
In computer science a programming technique that uses → objects and their interactions to design applications and programs.
Barnâme-sâzi, → programming; barâxt, → object; gerâ agent adj. of gerâyidan "to incline toward; to intend; to make for." The stem gerâ may be a variant of Mod.Pers. kil "bent, inclined" (k/g and l/r interchanges), from PIE base *klei- "to lean, incline," cognate with L. clinare "to bend" (E. declination, inclination, etc.), Gk. klinein "to cause to slope, slant, incline," Skt. sri- "to lean," O.Pers. θray-, Av. sray- "to lean," P.Gmc. *khlinen (Ger. lehnen, E. lean).
1, 2, 3) barâxti; 4) kondâri
1a) Of or pertaining to something that can exist independent of thought or
perception as part of reality. Opposite of → subjective.
Adjective of → object.
A diffraction grating placed over the aperture of a telescope in order to produce spectra of all the objects in the field of view.