rarefy

Other spellings

• rarify

Word parts

rare + -fy

Pronunciation

• IPA ^(key): /ˈrɛərəˌfaɪ/

• Audio (UK)

  (file)

Verb

Plain form rarify

Third-person singular rarifies

Past tense rarified

Past participle rarified

Present participle rarifying

1. (transitive) If you rarefy something, you make it less dense.