Definition: a particular environment or walk of life; "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"
Definition: any spherically shaped artifact
Definition: the geographical area in which one nation is very influential
Definition: a particular aspect of life or activity; "he was helpless in an important sector of his life"
Definition: a solid figure bounded by a spherical surface (including the space it encloses)
Definition: a three-dimensional closed surface such that every point on the surface is equidistant from the center
Definition: the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
Definition: 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 .
Definition: To place in a sphere, or among the spheres; to ensphere.