Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “core”


noun     /kɔːr/
IMPORTANT PART [no plural] the most important part of a system or principle : core values Better health care was at the core of the senator's campaign .Important and essential thingsInformation and messages
FRUIT [C] the hard, central part of certain fruits , such as apples , which contains the seeds Fruits and seeds and their parts
PLANET [no plural] the centre of a planet : the Earth's core → See also hard coreCentres of objects
(Definition of core noun from the Cambridge Learner's Dictionary © Cambridge University Press)

More Learner's Dictionary definitions for “core”

Definitions of “core” in other dictionaries

Word of the Day


the art and knowledge involved in preparing and eating good food

Word of the Day


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