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[rair-uh-fahy] /ˈrɛər əˌfaɪ/

verb (used with object), rarefied, rarefying.
to make rare or rarer; make less dense:
to rarefy a gas.
to make more refined, spiritual, or exalted.
verb (used without object), rarefied, rarefying.
to become rare or less dense; become thinned:
Moisture rarefies when heated.
verb -fies, -fying, -fied
to make or become rarer or less dense; thin out

late 14c., from Old French rarefier (14c.) and directly from Medieval Latin rarificare, from Latin rarefacere “make rare,” from rarus “rare, thin” (see rare (adj.1)) + facere “to make” (see factitious). Related: Rarefied.


Read Also:

  • Rare gas

    noun 1. another name for inert gas (sense 1)

  • Rarely

    [rair-lee] /ˈrɛər li/ adverb 1. on occasions; infrequently; seldom: I’m rarely late for appointments. 2. exceptionally; in an unusual degree. 3. unusually or remarkably well; excellent. /ˈrɛəlɪ/ adverb 1. hardly ever; seldom: I’m rarely in town these days 2. to an unusual degree; exceptionally 3. (dialect) uncommonly well; excellently: he did rarely at market yesterday […]

  • Rarely ever

    see: hardly ever

  • Rare mode

    operating system Unix CBREAK mode (character-by-character with keyboard interrupts enabled). Distinguished from raw mode and cooked mode; the phrase “a sort of half-cooked (rare?) mode” is used in the V7/BSD manuals to describe the mode. Usage: rare. [Jargon File] (1995-05-10)

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