Share this entry

Share this page

rarefy

Line breaks: rar¦efy
Pronunciation: /ˈrɛːrɪfʌɪ/

Entry from British & World English dictionary

(also rarify)

Definition of rarefy in English:

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

Origin

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

Derivatives

rarefication

1
Pronunciation: /-fɪˈkeɪʃ(ə)n/
noun

rarefactive

2
Pronunciation: /-ˈfaktɪv/
adjective

Definition of rarefy in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day Sprachgefühl
Pronunciation: ˈSHpräkɡəˌf(y)o͞ol
noun
intuitive understanding of a language’s natural idiom…