Dictionary - English
sphere
- Mathematics A three-dimensional surface, all points of which are equidistant from a fixed point. from The American Heritage® Dictionary of the English Language, 4th Edition / listen
- A spherical object or figure. from The American Heritage® Dictionary of the English Language, 4th Edition / listen
- A celestial body, such as a planet or star. from The American Heritage® Dictionary of the English Language, 4th Edition / listen
- The sky, appearing as a hemisphere to an observer: the sphere of the heavens. from The American Heritage® Dictionary of the English Language, 4th Edition / listen
- Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars. from The American Heritage® Dictionary of the English Language, 4th Edition
