[awr-thuh-bawr-ik, -bohr-, awr-thuh-] /ˈɔr θəˈbɔr ɪk, -ˈboʊr-, ˌɔr θə-/
Compare (def 2).
the more formal name for boric acid (sense 1)
[awr-thop-tiks] /ɔrˈθɒp tɪks/ noun, (used with a singular verb) 1. a method of exercising the eye and its muscles in order to cure strabismus or improve vision. /ɔːˈθɒptɪks/ noun 1. (functioning as sing) the science or practice of correcting defective vision, as by exercises to strengthen weak eye muscles orthoptics or·thop·tics (ôr-thŏp’tĭks) n. The study […]
/ɔːˈθɒptɪst/ noun 1. a person who is qualified to practise orthoptics
/ˌɔːθəʊpaɪˈrɒksiːn/ noun 1. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene orthopyroxene (ôr’thə-pī-rŏk’sēn’) 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