Definition, Meaning, Synonyms & Anagrams | English word SPHERE

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Definitions of SPHERE

1. (astronomy, now, rare) The celestial sphere: the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded. [from 14th c.]
2. (logic, dated) The domain of reference of a proposition, subject, or predicate, or the totality of the particular subjects to which it applies.
3. (mathematics) 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 [from 14th c.].
4. A spherical physical object; a globe or ball. [from 14th c.]
5. (historical, astronomy, mythology) Any of the concentric hollow transparent globes formerly believed to rotate around the Earth, and which carried the heavenly bodies; there were originally believed to be eight, and later nine and ten; friction between them was thought to cause a harmonious sound (the music of the spheres). [from 14th c.]
6. (mythology) An area of activity for a planet; or by extension, an area of influence for a god, hero etc. [from 14th c.]
7. (figuratively) The region in which something or someone is active; one's province, domain. [from 17th c.]
8. The natural, normal, or proper place (of something).
9. (geometry) The set of all points in three-dimensional Euclidean space (or n-dimensional space, in topology) that are a fixed distance from a fixed point [from 20th c.].
10. (transitive) To place in a sphere, or among the spheres; to ensphere.
11. (transitive) To make round or spherical; to perfect.

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