[n] any spherically shaped artifact
[n] a particular aspect of life or activity; "he was helpless in an important sector of his life"
[n] the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
[n] the geographical area in which one nation is very influential
[n] a three-dimensional closed surface such that every point on the surface is equidistant from the center
[n] a solid figure bounded by a spherical surface (including the space it encloses)
[n] 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"
Synonyms
area, arena, celestial sphere, domain, empyrean, field, firmament, heavens, orbit, sector, sphere of influence, vault of heaven, welkin