a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene
Any variety of the mineral pyroxene that crystallizes in the orthorhombic system and contains no calcium and little or no aluminum. Enstatite is an orthopyroxene.
/ˈɔːθəˌrɛksɪə/ noun 1. a disorder characterized by a morbid obsession with eating healthy foods only noun an obsession with eating only ‘healthy’ food; also called orthorexia nervosa Examples The yoga instructor seems to be suffering from orthorexia. Usage Note orthorexic adj
[awr-thuh-rom-bik] /ˌɔr θəˈrɒm bɪk/ adjective, Crystallography. 1. noting or pertaining to a system of crystallization characterized by three unequal axes intersecting at right angles; ; trimetric. /ˌɔːθəʊˈrɒmbɪk/ adjective 1. (crystallog) relating to the crystal system characterized by three mutually perpendicular unequal axes Also rhombic, trimetric orthorhombic (ôr’thō-rŏm’bĭk) Relating to a crystal having three axes of […]
[awr-thuh-skop-ik] /ˌɔr θəˈskɒp ɪk/ adjective, Ophthalmology. 1. pertaining to, characterized by, or produced by normal vision. /ˌɔːθəʊˈskɒpɪk/ adjective 1. of, relating to, or produced by normal vision 2. yielding an undistorted image orthoscopic or·tho·scop·ic (ôr’thə-skŏp’ĭk) adj.
[awr-thuh-skohp] /ˈɔr θəˌskoʊp/ noun, Ophthalmology. 1. (formerly) an instrument for examining the internal structures of the eye through a layer of water that neutralizes the refraction of the cornea. /ˈɔːθəʊˌskəʊp/ noun 1. (med, obsolete) a 19th-century instrument for viewing the fundus of the eye through a layer of water, which eliminates distortion caused by the […]