Main entry: sphere
Definition: any spherically shaped artifact
Definition: a particular aspect of life or activity
Usage: he was helpless in an important sector of his life
Main entry: vault of heaven, welkin, empyrean, firmament, sphere, celestial sphere, heavens
Definition: the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
Main entry: sphere, sphere of influence
Definition: the geographical area in which one nation is very influential
Main entry: sphere
Definition: a three-dimensional closed surface such that every point on the surface is equidistant from the center
Main entry: sphere
Definition: a solid figure bounded by a spherical surface (including the space it encloses)
Main entry: orbit, field, area, arena, sphere, domain
Definition: a particular environment or walk of life
Usage: his social sphere is limited; it was a closed area of employment; he's out of my orbit