Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR RAREFACTION

Rarefaction and condensation by instruments were also tried, but in vain.

Also, rarefaction by the air-pump does not injure air in the least degree.

With these pumps a higher degree of rarefaction can be obtained.

Waves: transverse, longitudinal; wave length, condensation, rarefaction.

Indicate the parts of the curve that correspond to a condensation and to a rarefaction.

He said that things are produced from air by rarefaction and condensation.

The rarefaction of the air and the scanty pasturage were the worst troubles.

This is precisely what is meant by rarefaction and condensation.

My ears also ached exceedingly in consequence of the rarefaction of the atmosphere.

He tries the rarefaction of air, but finds the effect insensible.

WORD ORIGIN

c.1600, from Middle French raréfaction or directly from Medieval Latin rarefactionem (nominative rarefactio), noun of action from past participle stem of Latin rarefacere (see rarefy). Used chiefly in reference to gasses.

MORE RELATED WORDS FOR RAREFACTION

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.