| ORTHOS | • orthos n. Plural of ortho. • ORTHO n. short for orthochromatic plate (a photographic plate). |
| ORTHOSCOPE | • orthoscope n. An instrument for examining the interior of an eye. • orthoscope n. An instrument for drawing projections of a skull. • ORTHOSCOPE n. a nineteenth century instrument for viewing the fundus of the eye through a layer of water, which eliminates distortion caused by the cornea. |
| ORTHOSCOPES | • orthoscopes n. Plural of orthoscope. • ORTHOSCOPE n. a nineteenth century instrument for viewing the fundus of the eye through a layer of water, which eliminates distortion caused by the cornea. |
| ORTHOSCOPIC | • orthoscopic adj. Free from optical distortion. • ORTHOSCOPIC adj. giving undistorted vision. |
| ORTHOSES | • orthoses n. Plural of orthosis. • ORTHOSIS n. (Greek) a device which supports or corrects deformities. |
| ORTHOSILICATE | • orthosilicate n. (Inorganic chemistry) any salt or ester of orthosilicic acid, (M+)4SiO44- or Si(OR)4. • orthosilicate n. (Mineralogy) any silicate mineral, such as garnet or olivine, in which the SiO4 tetrahedra do not share… • ORTHOSILICATE n. a salt of orthosilicic acid. |
| ORTHOSILICATES | • orthosilicates n. Plural of orthosilicate. • ORTHOSILICATE n. a salt of orthosilicic acid. |
| ORTHOSILICIC | • orthosilicic adj. (Chemistry) Of, relating to or derived from orthosilicic acid. • ORTHOSILICIC adj. as in orthosilicic acid, a weak acid made in solution by acidifying solutions of silicates. |
| ORTHOSIS | • orthosis n. (Medicine) A type of brace which either prevents or assists movement of a limb or the spine. • ORTHOSIS n. (Greek) a device which supports or corrects deformities. |
| ORTHOSTATIC | • orthostatic adj. Relating to orthostasis or orthostatism. • orthostatic adj. (Archaeology) Relating to an orthostat. • ORTHOSTATIC adj. pertaining to erect or standing position. |
| ORTHOSTICHIES | • orthostichies n. Plural of orthostichy. • ORTHOSTICHY n. a straight row, e.g. of leaves vertically over one another on an axis. |
| ORTHOSTICHOUS | • orthostichous adj. (Botany) Having orthostichies. • ORTHOSTICHOUS adj. arranged in vertical rows. |
| ORTHOSTICHY | • orthostichy n. (Botany) A row of leaves along a stem. • ORTHOSTICHY n. a straight row, e.g. of leaves vertically over one another on an axis. |