a particular environment or walk of life; his social sphere is limited; it was a closed area of employment; hes out of my orbit

[ Syn: domain , area , orbit , field , arena ]

any spherically shaped artifact

the geographical area in which one nation is very influential

[ Syn: sphere of influence ]

a particular aspect of life or activity; he was helpless in an important sector of his life

[ Syn: sector ]

a solid figure bounded by a spherical surface (including the space it encloses)

a three-dimensional closed surface such that every point on the surface is equidistant from the center

the apparent surface of the imaginary sphere on which celestial bodies appear to be projected

[ Syn: celestial sphere , empyrean , firmament , heavens , vault of heaven , welkin ]