Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “sphere”

sphere

noun [C]     /sfɪər/
SUBJECT a subject or area of knowledge, work, etc: the political sphereTopics and areas of interest
SHAPE a round object shaped like a ballSpherical, circular and annular objectsGeometrical shapesGeometrical shapesSpherical, circular and annular objects
(Definition of sphere noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “sphere” in other dictionaries

Word of the Day

neighbourly

friendly or helpful

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More