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Synonyms

rarefy

American  
[rair-uh-fahy] / ˈrɛər əˌfaɪ /

verb (used with object)

rarefied, rarefying
  1. to make rare or rarer; make less dense.

    to rarefy a gas.

  2. to make more refined, spiritual, or exalted.


verb (used without object)

rarefied, rarefying
  1. to become rare or less dense; become thinned.

    Moisture rarefies when heated.

rarefy British  
/ ˈrɛərɪˌfaɪ /

verb

  1. to make or become rarer or less dense; thin out

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of rarefy

First recorded in 1350–1400; Middle English rarefien, from Middle French rarefier, from Medieval Latin rārificāre, from Latin rārēfacere, equivalent to rārē-, irregular, unexplained combining form of rārus + facere “to make”; see origin at rare 1, -fy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Although these sculptures pay tribute to commercialism, they rarefy it to something austere — or at least as austere as anything with pulsing green lights can be.

From Washington Post • Apr. 19, 2018

Of course it’s serious, and art is serious, but I’m not going to rarefy it.”

From New York Times • Dec. 16, 2011

It contains moist air and a movable diaphragm or piston to rarefy it suddenly.

From Time Magazine Archive

The rarefy of the atmosphere continued to affect the wood-work of the wagons, and the wheels were incessantly falling to pieces.

From The Adventures of Captain Bonneville, U. S. A., in the Rocky Mountains and the Far West by Bonneville, Benjamin Louis Eulalie de

But extend this vapour, rarefy it; from so narrow a room as our natural bodies, to any politic body, to a state.

From Devotions Upon Emergent Occasions Together with Death's Duel by Donne, John

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