Part 64 (1/2)

O'PTICAL, _a._ relating to the science of optics

O'PTICS, _s._ the science of the nature and laws of vision

O'PULENT, _a._ rich

O'RACLE, _s._ something delivered by supernatural wisdom; the place where, or persons of whom, the determinations of heaven are inquired

O'RAL, _a._ delivered by mouth; not written

O'RATOR, _s._ a public speaker; a man of eloquence

O'RBIT, _s._ a circle; path of a heavenly body

O'RCHARD, _s._ a garden of fruit trees

O'RCHIS, _s._ a kind of flowering plant

O'RDER, _s._ method; regularity; command; a rank or cla.s.s; rule

O'RDINANCE, _s._ law; rule; appointment

O'RDINARY, _a._ established; regular; common; of low rank

O'RDNANCE, _s._ cannon; great guns

O'RGAN, _s._ natural instrument: as the tongue is the organ of speech. A musical instrument

ORGA'NIC, _a._ consisting of various parts co-operating with each other

O'RGANISM, _s._ organic structure

O'RIENT, _a._ eastern; oriental; bright; gaudy

ORI'GINAL, _a._ primitive; first

O'RNAMENT, _v.a._ embellish; decorate

OSCILLA'TION, _a._ the act of moving backward or forward like a pendulum

O'SSEOUS, _a._ bony; resembling bone

OSTENTA'TION, _s._ outward show; pride of riches or power

OSTRICH, _s._ a large bird

OTHERWISE, _ad._ in a different manner; by other causes; in other respects

OU'TLET, _s._ pa.s.sage outward