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rarefactive

Variant of rarefy

transitive verb, intransitive verb rarefied, rarefying

to make or become thin, or less dense: the rarefied mountain air
to make or become more refined, subtle, or lofty: a rarefied sense of humor

Related Forms:

rarefaction noun
rarefactive adjective

Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.

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