Sphere etymology in English

Etymology Blog

English word sphere comes from Ancient Greek (to 1453) σφαῖρα

Dictionary entry	Language	Definition
σφαῖρα	Ancient Greek (to 1453) (grc)
sphaera	Latin (lat)	A ball for playing. A globe of the heavens. Ball, globe, sphere.
sphēra	Late Latin (LL)
sphera	Late Latin (LL)
sphere	Old French (842-ca. 1400) (fro)	Sphere (shape).
sphere	English (en)	(transitive) To make round or spherical; to perfect.. (transitive) To place in a sphere, or among the spheres; to ensphere. (astronomy, now, _, rare) The apparent outer limit of space; the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded. [from 14th c.]. (figuratively) The region in which something or someone is active; one's province, [...]

Sphere etymology