Defn: Of or pertaining to the Orthoptera.
ORTHORHOMBIC
Or`tho*rhom"bic, a. Etym: [Ortho- + rhombic.] (Crystallog.)
Defn: Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
ORTHOSCOPE
Or"tho*scope, n. Etym: [Ortho- + -scope.] (Physyol.)
Defn: An instrument designed to show the condition of the superficial portions of the eye.
ORTHOSCOPIC
Or`tho*scop"ic, a. (Opt.)
Defn: Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.
ORTHOSILICIC
Or`tho*si*lic"ic, a. Etym: [Ortho- + silicic.] (Chem.)
Defn: Designating the form of silicic acid having the normal or highest number of hydroxyl groups.
ORTHOSPERMOUS
Or`tho*sper"mous, a. Etym: [Ortho- + Gr. (Bot.)