sphere

A three-dimensional surface, all points of which are equidistant from a fixed point.

A spherical object or figure.

A celestial body, such as a planet or star.

The sky, appearing as a hemisphere to an observer.

Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars.

A range or extent of knowledge, interest, or activity: synonym: field.

A social level or part of society or group.

A range of power or influence.

To form into a sphere.