sphere

A completely round shape or object, like a ball.

• The lamp is shaped like a sphere.
• She held a small glass sphere.
• The Earth is almost a perfect sphere.

Similar words: ball, globe

Common phrases: glass sphere, solid sphere, perfect sphere

An area of life or work in which someone acts, has responsibility, or has influence.

• Her work belongs to the political sphere.
• The matter falls outside my sphere of responsibility.
• His influence extends into several different spheres of public life.

How to use it: sphere of something (The company expanded its sphere of influence.)

Similar words: domain, field, area

Common phrases: sphere of influence, public sphere, political sphere

A surface consisting of all points at the same distance from a central point.

• Every point on a sphere is equally distant from its centre.
• Draw a sphere with a radius of two units.
• The equation describes a sphere in three-dimensional space.

Common phrases: unit sphere, sphere surface, sphere of radius