Did you know?

Click any word in a definition or example to find the entry for that word

conversion - definition and synonyms


What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

noun conversion pronunciation in British English /kənˈvɜː(r)ʃ(ə)n/
Word Forms
  • Facebook
  • Twitter
  1. 1
    [countable/uncountable] the process of changing from one system, method, or use to another
    currency conversion
    conversion of: the conversion of an office building into a block of flats
    conversion from: the conversion from communism to capitalism
    1. a.
      [countable] British a building that has been changed so that people can live in it
      a loft conversion (=one that has been changed into a flat)


a meal served in the evening which consists of foods traditionally eaten at breakfast

BuzzWord Article

Open Dictionary

troll factory

a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog