Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “refine”


verb [T]     /rɪˈfaɪn/
PRODUCTION to improve something or to make it pure , especially by removing material that is not wanted : Crude oil is industrially refined to purify it.
to improve an idea , a method , a system , etc. by making small changes : Engineers spent many months refining the software .
(Definition of refine verb from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of refine

Definitions of “refine” in other dictionaries

Word of the Day

as husband and wife

in the same way as two people who are married

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