- a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center. Equation: x2 + y2 + z2 = r2.
- the surface of such a figure; a spherical surface.
verb (used with object), sphered, spher·ing.
Origin of sphere
Definition for sphere (2 of 2)
Examples from the Web for sphere
This may be precisely the point: that fiction at its best is a sphere of suspended belief as much as suspended disbelief.
In almost every sphere of life, the trend is to trade in ownership for access.
At that point, a sphere lit up, resembling the landing of the UFO in E.T., and the overheard lights descended on the stage.I'm Not Country or Pop. I'm Just Pure Garth Brooks.|David Masciotra|September 10, 2014|DAILY BEAST
And while I may have put a bunch of stunt guys in peril on Titanic, it was my ass in the sphere on the dive.
Business decisions sometimes operate in a sphere almost devoid of morality.
The devotion to something afarFrom the sphere of our sorrow.The Call of the Wildflower|Henry S. Salt
She is too amiable to desire what would make me unhappy, and too judicious to wish to step beyond the sphere of her sex.Woman in the Nineteenth Century|Margaret Fuller Ossoli
Slowly, by inches, he started to back toward the sphere; then suddenly he ran for it with all his might, Holmes after him.Astounding Stories, April, 1931|Various
But who does not feel that it is employed in too confined a sphere?Devereux, Complete|Edward Bulwer-Lytton
A sharp cutting instrument, fixed on a bench, is brought into contact with the surface of the sphere, which is made to revolve.
British Dictionary definitions for sphere (1 of 2)
- a three-dimensional closed surface such that every point on the surface is equidistant from a given point, the centre
- the solid figure bounded by this surface or the space enclosed by it. Equation: (x–a)² + (y–b)² + (z–c)² = r ², where r is the radius and (a, b, c) are the coordinates of the centre; surface area: 4π r ²; volume: 4π r ³/3
verb (tr) mainly poetic
Word Origin for sphere
British Dictionary definitions for sphere (2 of 2)
n combining form
Word Origin and History for sphere
1530s, restored spelling of Middle English spere (c.1300) "space, conceived as a hollow globe about the world," from Old French espere (13c.), from Latin sphaera "globe, ball, celestial sphere," from Greek sphaira "globe, ball," of unknown origin.
Sense of "ball, body of globular form" is from late 14c. Medieval astronomical meaning "one of the 8 (later 10) concentric, transparent, hollow globes believed to revolve around the earth and carry the heavenly bodies" is from late 14c.; the supposed harmonious sound they made rubbing against one another was the music of the spheres (late 14c.). Meaning "range of something" is first recorded c.1600 (e.g. sphere of influence, 1885, originally in reference to Anglo-German colonial rivalry in Africa). A spherical number (1640s) is one whose powers always terminate in the same digit as the number itself (5,6, and 10 are the only ones).