Definition of rarefy in English:

rarefy

Line breaks: rar¦efy
Pronunciation: /ˈrɛːrɪfʌɪ/

Entry from British & World English dictionary

(also rarify)

verb (rarefies, rarefying, rarefied)

  • Make or become less dense or solid: [with object]: air rarefies and degrounds the physical body [no object]: as the shell continues to expand and rarefy, astronomers may eventually be able to see characteristic gamma rays from the radioactivity within

Derivatives

rarefication

Pronunciation: /-fɪˈkeɪʃ(ə)n/
noun

rarefactive

Pronunciation: /-ˈfaktɪv/
adjective

Origin

late Middle English: from Old French rarefier, or medieval Latin rareficare, based on Latin rarus 'rare' + facere 'make'.

More definitions of rarefy

Definition of rarefy in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody