sphere

Definition

A surface in three dimensions consisting of all points equidistant from a center. .

Etymology

From Middle English spere, from Old French sphere, from Late Latin sphēra, earlier Latin sphaera (“ball, globe, celestial sphere”), from Ancient Greek σφαῖρα (sphaîra, “ball, globe”), of unknown origin. Not related to superficially similar Persian سپهر (sepehr, “sky”) .

Example Sentences

• "Of celestial bodies, first the sun, / A mighty sphere, he framed."
• "So your orientation changes a little bit but it sinks in that the world is a sphere, and you're going around it, sometimes under it, sideways, or over it."
• "Though cold and darkness longer hang somewhere, / Yet Phoebus equally lights all the Sphere."

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