Orthoëpy, or′tho-e-pi, n. (gram.) correct pronunciation of words.—adjs. Orthoëp′ic, -al.—adv. Orthoëp′ically.—n. Or′thoëpist, one versed in orthoëpy. [Gr. orthos, right, epos, a word.]
Orthogamy, or-thog′a-mi, n. (bot.) direct or immediate fertilisation.
Orthognathous, or-thog′nā-thus, adj. straight-jawed—also Orthognath′ic.—n. Orthog′nathism. [Gr. orthos, straight, gnathos, the jaw.]
Orthogon, or′tho-gon, n. (geom.) a figure with all its angles right angles.—adj. Orthog′onal, rectangular.—adv. Orthog′onally. [Gr. orthos, right, gōnia, angle.]
Orthographer, or-thog′ra-fėr, n. one who spells words correctly—also Orthog′raphist.—adjs. Orthograph′ic, -al, pertaining or according to orthography: spelt correctly.—adv. Orthograph′ically.—n. Orthog′raphy (gram.), the art or practice of spelling words correctly. [Gr. orthographia—orthos, right, graphein, to write.]
Orthometry, or-thom′et-ri, n. the art of constructing verse correctly.
Orthopædia, or-thō-pē-dī′a, n. the art or process of curing deformities of the body, esp. in childhood—also Or′thopædy, Or′thopedy.—adjs. Orthopæ′dic, -al, Orthoped′ic, -al.—ns. Orthopæ′dics, Orthoped′ics, orthopædic surgery; Or′thopædist, Or′thopedist, one skilled in the foregoing. [Gr. orthos, straight, pais, paidos, a child.]
Orthophony, or′thō-fō-ni, n. the art of correct speaking: the proper culture of the voice. [Gr. orthos, straight, phōnein, to speak—phōnē, voice.]
Orthopnœa, or-thop-nē′a, n. dyspnœa.—n. Orthop′nic, one who can breathe in an upright posture only. [Gr. orthos, straight, pnein, to breathe.]
Orthopraxy, or′thō-prak-si, n. correct practice or procedure.