English-Thai Dictionary
rarefy
VI เบาบาง empty bao-bang
rarefy
VT ทำให้ หายาก tam-hai-ha-yak
rarefy
VT ทำให้ เบาบาง attenuate dilute tam-hai-bao-bang
Webster's 1828 Dictionary
RAREFY
v.t.[L. rarefacio; rarus, rare, and facio, to make. ] To make thin and porous or less dense; to expand or enlarge a body without adding to it any new portion of its own matter; opposed to condense.
RAREFY
v.i.To become thin and porous.
RAREFYING
ppr. Making thin or less dense.
Webster's 1913 Dictionary
RAREFY
Rar "e *fy, v. t. [imp. & p. p. Rarefied; p. pr. & vb. n. Rarefying. ]Etym: [F. raréfier; L. rarus rare + -ficare (in comp. ) to make; cf. L. rarefacere. See -fy. ]
Defn: To make rare, thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to; -- opposed to condense.
RAREFY
RAREFY Rar "e *fy, v. i.
Defn: To become less dense; to become thin and porous. "Earth rarefies to dew. " Dryden.
New American Oxford Dictionary
rarefy
rarefy |ˈrɛːrɪfʌɪ |(also rarify ) ▶verb ( rarefies, rarefying, rarefied ) make or become less dense or solid. DERIVATIVES rarefication |-fɪˈkeɪʃ (ə )n |noun, rarefactive |-ˈfaktɪv |adjective ORIGIN late Middle English: from Old French rarefier, or medieval Latin rareficare, based on Latin rarus ‘rare ’ + facere ‘make ’.
Oxford Dictionary
rarefy
rarefy |ˈrɛːrɪfʌɪ |(also rarify ) ▶verb ( rarefies, rarefying, rarefied ) make or become less dense or solid. DERIVATIVES rarefication |-fɪˈkeɪʃ (ə )n |noun, rarefactive |-ˈfaktɪv |adjective ORIGIN late Middle English: from Old French rarefier, or medieval Latin rareficare, based on Latin rarus ‘rare ’ + facere ‘make ’.
The Wordsmith Dictionary