Definition of rarefy
English to English verb - lessen the density or solidity of
The bones are rarefied.
source: WordNet 3.0 - make more subtle or refined
source: WordNet 3.0 - weaken the consistency of (a chemical substance)
source: WordNet 3.0 - To make rare, thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to; -- opposed to condense.
source: Webster 1913 - To become less dense; to become thin and porous.
source: Webster 1913
Visual Synonyms 
Nearby Word
rarefy, reify, reefy, ref, raf, raff, rape, reef, rief, rave, reif, rareripe, roar off, revivify, rerefief, roofy, raphe, ropey, repay, rappee
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