Origin of rarefaction
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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.
- the act or process of making less dense or the state of being less dense
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
Word Origin and History for rarefaction
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.
Online Etymology Dictionary, © 2010 Douglas Harper
- A decrease in density and pressure in a medium, such as air, caused by the passage of a sound wave.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A decrease in density and pressure in a medium, such as air, especially when caused by the passage of a wave, such as a sound wave.
- The region in which this occurs.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.