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rarefy |
3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Rarefy \Rar"e*fy\, v. t. [imp. & p. p. {Rarefied}; p. pr & vb n. {Rarefying}.] [F. rar['e]fier; L. rarus rare + -ficare (in comp.) to make cf L. rarefacere See {-fy}.] To make rare thin, porous, or less dense; to expand or enlarge without adding any new portion of matter to -- opposed to condense. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Rarefy \Rar"e*fy\, v. i. To become less dense; to become thin and porous. ``Earth rarefies to dew.'' --Dryden. From WordNet r 1.6 [wn]: rarefy v 1: make more subtle or refined [syn: {sublimate}, {subtilize}] 2: weaken the consistency of (a chemical substance) [syn: {attenuate}]
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