Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “function”


noun [U] (WORK)    /ˈfʌŋk.ʃən/
the way in which something works or operates : It's a disease that affects the function of the nervous system . Studies suggest that regular intake of the vitamin significantly improves brain function.Performing a functionFunctioning
(Definition of function noun (WORK) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of function

Definitions of “function” in other dictionaries

Word of the Day


a skilled and trained cook who works in a hotel or restaurant, especially the most important cook

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