| orthodontics, corrective | The phase of orthodontics concerned with the correction of malocclusion with proper appliances and prevention of its sequelae. (12 Dec 1998) |
|---|---|
| orthodontics, interceptive | Recognition and elimination of potential irregularities and malpositions in the developing dentofacial complex. (12 Dec 1998) |
| orthodontist | <specialist> A dentist who has been specially trained to do orthodontics. (08 Jan 1998) |
| orthodox | 1. Sound in opinion or doctrine, especially in religious doctrine; hence, holding the Christian faith; believing the doctrines taught in the Scriptures; opposed to heretical and heterodox; as, an orthodox Christian. 2. According or congruous with the doctrines of Scripture, the creed of a church, the decree of a council, or the like; as, an orthodox opinion, book, etc. 3. Approved; conventional. "He saluted me on both cheeks in the orthodox manner." (H. R. Haweis) The term orthodox differs in its use among the various Christian communions. The Greek Church styles itself the "Holy Orthodox Apostolic Church," regarding all other bodies of Christians as more or less heterodox. The Roman Catholic Church regards the Protestant churches as heterodox in many points. In the United States the term orthodox is frequently used with reference to divergent views on the doctrine of the Trinity. Thus it has been common to speak of the Trinitarian Congregational churches in distinction from the Unitarian, as Orthodox. The name is also applied to the conservative, in distinction from the "liberal", or Hicksite, body in the Society of Friends. Origin: L. Orthodoxus, Gr.; right, true + opinion, to think, seem; cf. F. Orthodoxe. See Ortho-, Dogma. Source: Websters Dictionary (01 Mar 1998) |
| orthodromic | Denoting the propagation of an impulse along an axon in the normal direction. Compare: antidromic. Synonym: dromic. Origin: ortho-+ G. Dromos, course (05 Mar 2000) |
| orthogamy | <botany> Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; opposed to heterogamy. Origin: Ortho- + Gr. Marriage. Source: Websters Dictionary (01 Mar 1998) |
| orthogenesis | The doctrine that evolution is governed by intrinsic factors and occurs in predictable directions. Origin: ortho-+ G. Genesis, origin (05 Mar 2000) |
| orthogenic | Relating to orthogenesis. (05 Mar 2000) |
| orthogenics | <study> The scientific study of artificial selection towards a particular set of desired characteristics. (09 Oct 1997) |
| orthoglycaemic glycosuria | <nephrology> Presence of glucose in the urine without hyperglycaemia due to abnormality in renal tubular reabsorption of filtered glucose. Synonym: nondiabetic glycosuria, orthoglycaemic glycosuria. (05 Mar 2000) |
| orthognathia | The study of the causes and treatment of conditions related to malposition of the bones of the jaws. Origin: ortho-+ G. Gnathos, jaw (05 Mar 2000) |
| orthognathic | Orthognathous 1. Relating to orthognathia. 2. Having a face without projecting jaw, one with a gnathic index below 98. Origin: ortho-+ G. Gnathos, jaw (05 Mar 2000) |
| orthognathic surgery | surgical orthodontics |
| orthognathism | <anatomy> The quality or state of being orthognathous. Source: Websters Dictionary (01 Mar 1998) |
| orthognathous | <anatomy> Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; opposed to prognathous. See Gnathic index, under Gnathic. Origin: Ortho- + Gr. The jaw. Source: Websters Dictionary (01 Mar 1998) |