WordWeb Online

1. A particular environment or walk of life
   "his social sphere is limited";
   - domain, area, orbit, field, arena
    
2. Any spherically shaped artifact
    
3. The geographical area in which one nation is very influential
   - sphere of influence
    
4. A particular aspect of life or activity
   "he was helpless in an important sphere of his life";
   - sector
    
5. A solid figure bounded by a spherical surface (including the space it encloses)
    
6. A three-dimensional closed surface such that every point on the surface is equidistant from the centre
    
7. The apparent surface of the imaginary sphere on which celestial bodies appear to be projected
   - celestial sphere, empyrean, firmament, heavens, vault of heaven, welkin

Derived forms: spheres

Type of: artefact [Brit], artifact [N. Amer], aspect, environment, facet, geographic area, geographic region, geographical area, geographical region, round shape, surface

Encyclopedia: Sphere