(O*rog"ra*phy) n. [Gr. 'o`ros, a mountain + -graphy.] That branch of science which treats
of mountains and mountain systems; orology; as, the orography of Western Europe.
(||Or`o*hip"pus) n. [NL., fr. Gr. 'o`ros, mountain (referring to the Rocky Mountain region) +
"i`ppos horse.] (Paleon.) A genus of American Eocene mammals allied to the horse, but having four
toes in front and three behind.
(O"roide) n. [F. or gold (L. aurum) + Gr. form.] An alloy, chiefly of copper and zinc or tin,
resembling gold in color and brilliancy. [Written also oreide.]
(Or`o*log"ic*al) a. [Cf. F. orologique.] Of or pertaining to orology.
(O*rol"o*gist) n. One versed in orology.
(O*rol"o*gy) n. [Gr. mountain + -logy: cf. F. orologie.] The science or description of mountains.
(O"ro*tund`) a. [L. os, oris, the mouth + rotundus round, smooth.] Characterized by fullness,
clearness, strength, and smoothness; ringing and musical; said of the voice or manner of utterance.
n. The orotund voice or utterance Rush.
(O`ro*tun"di*ty) n. The orotund mode of intonation.
(Or"pha*line) n. See Orpheline. [Obs.]
Orphans' court (Law), a court in some of the States of the Union, having jurisdiction over the estates
and persons of orphans or other wards. Bouvier.
(Or"phan) n. [L. orphanus, Gr. akin to L. orbus. Cf. Orb a blank window.] A child bereaved
of both father and mother; sometimes, also, a child who has but one parent living.
(Or"phan), a. Bereaved of parents, or (sometimes) of one parent.
(Or"phan), v. t. [imp. & p. p. Orphaned ; p. pr. & vb. n. Orphaning.] To cause to become
an orphan; to deprive of parents. Young.