rarefy

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

rarify

Definition of rarefy

rarefied

;

rarefying

  1. transitive verb
  2. 1 :  to make rare, thin, porous, or less dense :  to expand without the addition of matter

  3. 2 :  to make more spiritual, refined, or abstruse

  4. intransitive verb
  5. :  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


First Known Use: 14th century


Medical Dictionary

rarefy

verb rar·e·fy
variants: also

rarify

\ˈrar-ə-ˌfī, ˈrer-\play

Medical Definition of rarefy

rarefied

also

ified

;

rarefying

also

ifying

  1. transitive verb

  2. :  to make rare, thin, porous, or less dense :  to expand without the addition of matter

  3. intransitive verb

  4. :  to become less dense



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