O interj.
ation used in calling or directly addressing a person or personified object; also, as an emotional or impassioned exclamation expressing pain, grief, surprise, desire, fear, etc. For ever, O Lord, thy word is settled in heaven. Ps. cxix. 89. O how love I thy law ! it is my meditation all the day. Ps. cxix. 97.…
ORRERY n.
h illustrates, by the revolution of balls moved by wheelwork, the relative size, periodic motions, positions, orbits, etc., of bodies in the solar system.