rarefy

verb rar·e·fy \ ˈrer-ə-ˌfī \
variants: or less commonly rarify

Definition of rarefy

rarefied; rarefying
transitive verb
1 :to make rare, thin, porous, or less dense :to expand without the addition of matter
2 :to make more spiritual, refined, or abstruse
intransitive verb
:to become less dense

Recent Examples of rarefy from the Web

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Origin and Etymology of rarefy

Middle English rarefien, rarifien, modification of Latin rarefacere, from rarus rare + facere to make — more at do


Medical Dictionary

rarefy

verb rar·e·fy
variants: also rarify play \ˈrar-ə-ˌfī, ˈrer-\

medical Definition of rarefy

rarefied also -ified; rarefying also -ifying
transitive verb
:to make rare, thin, porous, or less dense :to expand without the addition of matter
intransitive verb
:to become less dense


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