[verb in-vurt; adjective, noun in-vurt]
See more synonyms for invert on
verb (used with object)
  1. to turn upside down.
  2. to reverse in position, order, direction, or relationship.
  3. to turn or change to the opposite or contrary, as in nature, bearing, or effect: to invert a process.
  4. to turn inward or back upon itself.
  5. to turn inside out.
  6. Chemistry. to subject to inversion.
  7. Music. to subject to musical inversion.
  8. Phonetics. to articulate as a retroflex vowel.
verb (used without object)
  1. Chemistry. to become inverted.
  1. Chemistry. subjected to inversion.
  1. a person or thing that is inverted.
  2. a homosexual.
  3. (in plumbing) that portion of the interior of a drain or sewer pipe where the liquid is deepest.
  4. an inverted arch or vault.
  5. Philately. a two-colored postage stamp with all or part of the central design printed upside down in relation to the inscription.

Origin of invert

1525–35; < Latin invertere to turn upside down or inside out, equivalent to in- in-2 + vertere to turn; see verse
Related formsin·vert·i·ble, adjectivein·vert·i·bil·i·ty, nounnon·in·vert·ed, adjectiveun·in·vert·ed, adjectiveun·in·vert·i·ble, adjective

Synonym study

2. See reverse. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for invert

Contemporary Examples of invert

Historical Examples of invert

British Dictionary definitions for invert


verb (ɪnˈvɜːt)
  1. to turn or cause to turn upside down or inside out
  2. (tr) to reverse in effect, sequence, direction, etc
  3. (tr) phonetics
    1. to turn (the tip of the tongue) up and back
    2. to pronounce (a speech sound) by retroflexion
  4. logic to form the inverse of a categorial proposition
noun (ˈɪnvɜːt)
  1. psychiatry
    1. a person who adopts the role of the opposite sex
    2. another word for homosexual
  2. architect
    1. the lower inner surface of a drain, sewer, etcCompare soffit (def. 2)
    2. an arch that is concave upwards, esp one used in foundations
Derived Formsinvertible, adjectiveinvertibility, noun

Word Origin for invert

C16: from Latin invertere, from in- ² + vertere to turn
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 invert

1530s, from Middle French invertir or directly from Latin invertere "turn upside down, turn about," from in- "in, on" (see in- (2)) + vertere "to turn" (see versus). Related: Inverted; inverting; invertedly.

Online Etymology Dictionary, © 2010 Douglas Harper

invert in Medicine


  1. To turn inside out or upside down.
  2. To reverse the position, order, or condition of.
  3. To subject to inversion.
  1. Something inverted.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.