| orthohepadnavirus | A genus of hepadnaviridae causing hepatitis in humans, woodchucks, and ground squirrels. It is also associated with human hepatocellular carcinoma. Hepatitis b virus is the type species. (12 Dec 1998) |
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| orthokeratology | A method of molding the cornea with contact lenses to improve unaided vision. Origin: ortho-+ G. Keras, horn (cornea), + logos, science (05 Mar 2000) |
| orthokeratosis | Formation of an anuclear keratin layer, as in the normal epidermis. Origin: ortho-+ G. Keras, horn, + -osis, condition (05 Mar 2000) |
| orthokinesis | Kinesis in which the speed or frequency of movement is increased (positive orthokinesis) or decreased. (18 Nov 1997) |
| orthokinetics | A method advocated for the treatment of hypertrophic osteoarthritis in which an attempt is made to change muscular action from one group of muscles to another set of muscles to protect the diseased joint. Origin: ortho-+ G. Kinetikos, movable, fr. Kineo, to move (05 Mar 2000) |
| orthology | <study> The right description of things. Origin: Gr.; right + speech, description: cf. F. Orthologie. Source: Websters Dictionary (01 Mar 1998) |
| orthomechanical | Pertaining to braces, prostheses, orthotic devices, and appliances. Origin: ortho-+ mechanical (05 Mar 2000) |
| orthomechanotherapy | Treatment with braces, prostheses, orthotic devices, or appliances. Origin: ortho-+ G. Mechane, machine, + therapeia, medical treatment (05 Mar 2000) |
| orthomelic | Correcting malformations of arms or legs. Origin: ortho-+ G. Melos, limb (05 Mar 2000) |
| orthometer | Synonym: exophthalmometer. Origin: ortho-+ G. Metron, measure (05 Mar 2000) |
| orthometric | <chemistry> Having the axes at right angles to one another; said of crystals or crystalline forms. See: Orthometry. Source: Websters Dictionary (01 Mar 1998) |
| orthomolecular | L.C. Pauling's term denoting a therapeutic approach designed to provide an optimum molecular environment for body functions, with particular reference to the optimum concentrations of substances normally present in the human body, whether formed endogenously or ingested. (05 Mar 2000) |
| orthomolecular psychiatry | An approach to psychiatry that focuses on the use of megavitamins and nutrition in the treatment of such mental illnesses as the schizophrenic disorders. (05 Mar 2000) |
| orthomolecular therapy | The use of very large doses of vitamins or other naturally occurring substances normally present in the body, frequently for the treatment of mental disorders. (12 Dec 1998) |
| orthomorphic | <geometry> Having the right form. Orthomorphic projection, a projection in which the angles in the figure to be projected are equal to the corresponding angles in the projected figure. Origin: Ortho- + morphic. Source: Websters Dictionary (01 Mar 1998) |