Orris, or′is, n. a species of iris in the south of Europe, the dried root of which has the smell of violets, used in perfumery.—Also Orr′ice.
Orris, or′is, n. a peculiar kind of gold or silver lace: upholsterers' galloon and gimp. [Orphrey.]
Orseille, or-sāl′, n. a colouring matter (cf. Archil and Litmus).—adj. Orsel′lic. [Fr.]
Ort, ort, n. a fragment, esp. one left from a meal—usually pl. [Low Ger. ort, refuse of fodder.]
Orthocephaly, or-thō-sef′a-li, n. the character of a skull in which the ratio between the vertical and transverse diameters is from 70 to 75.—adj. Orthocephal′ic.
Orthoceras, or-thos′e-ras, n. a genus of fossil cephalopods, having the shell straight or but slightly curved.
Orthochromatic, or-thō-krō-mat′ik, adj. correct in rendering the relation of colours, without the usual photographic modifications. [Gr. orthos, right, chrōma, colour.]
Orthoclase, or′tho-klāz, n. common or potash feldspar.—adj. Orthoclas′tic. [Gr. orthos, straight, klasis, a fracture.]
Orthodox, or′tho-doks, adj. sound in doctrine: believing the received or established opinions, esp. in religion: according to the received doctrine.—adv. Or′thodoxly.—ns. Or′thodoxness; Or′thodoxy, soundness of opinion or doctrine: belief in the commonly accepted opinions, esp. in religion. [Through Fr. and Late L. from Gr. orthodoxos—orthos, right, doxa, opinion—dokein, to seem.]
Orthodromic, or-thō-drom′ik, adj. pertaining to Or′thodromy, the art of sailing on a great circle or in a straight course.