[ in-vur-zhuhn, -shuhn ]
/ ɪnˈvɜr ʒən, -ʃən /
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pertaining to or associated with inversion therapy or the apparatus used in it: inversion boots.



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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of inversion

First recorded in 1545–55; from Latin inversiōn- (stem of inversiō ) “a turning in”; see inverse, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for inversion

British Dictionary definitions for inversion

/ (ɪnˈvɜːʃən) /


Derived forms of inversion

inversive, adjective
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

Medical definitions for inversion

[ ĭn-vûrzhən ]


The act of inverting or the state of being inverted.
Conversion of a substance in which the direction of optical rotation is reversed.
The taking on of the gender role of the opposite sex.
A chromosomal defect in which a segment of the chromosome breaks off and reattaches in the reverse direction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for inversion

[ ĭn-vûrzhən ]

A departure from the normal effect of altitude on a meteorological property, especially an atmospheric condition in which the air temperature rises with increasing altitude.♦ A layer of air that is warmer than the air below it is called an inversion layer. Such a layer traps the surface air in place and prevents dispersion of any pollutants it contains.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.