(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 .

(transitive) To place in a sphere, or among the spheres; to ensphere. / (transitive) To make round or spherical; to perfect.

plural of sphere

Third-person singular simple present indicative form of sphere

(mathematics) Used to form nouns indicating a sphere of x dimensions / Designating a spherical field or object. / Designating a global system or layer of the Earth or another planet.

The practice of humans traveling in a sphere, generally made of transparent plastic, usually for fun.

The practice of humans traveling in a sphere, generally made of transparent plastic, usually for fun.

simple past tense and past participle of sphere

A unified body or collection of knowledge regarding a specific subject.

plural of homology sphere