noun

1. A regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter .

2. A spherical physical object; a globe or ball.

3. The apparent outer limit of space; the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded.

Synonyms: celestial body, celestial sphere, 2-sphere, 3-sphere, ball, globe, orb, area

verb

1. To place in a sphere, or among the spheres; to ensphere.

2. To make round or spherical; to perfect.