[ verb in-vaj-uh-neyt; adjective in-vaj-uh-nit, -neyt ]

verb (used with object),in·vag·i·nat·ed, in·vag·i·nat·ing.
  1. to insert or receive, as into a sheath; sheathe.

  2. to fold or draw (a tubular organ) back within itself; intussuscept.

verb (used without object),in·vag·i·nat·ed, in·vag·i·nat·ing.
  1. to become invaginated; undergo invagination.

  2. to form a pocket by turning in.

  1. folded or turned back upon itself.

Origin of invaginate

1650–60; <Medieval Latin invāgīnātus, past participle of invāgīnāre to sheathe. See in-2, vaginate

Other words from invaginate

  • un·in·vag·i·nat·ed, adjective

Words Nearby invaginate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for invaginate


  1. pathol to push one section of (a tubular organ or part) back into itself so that it becomes ensheathed; intussuscept

  2. (intr) (of the outer layer of an organism or part) to undergo invagination

adjective(ɪnˈvædʒɪnɪt, -ˌneɪt)
  1. (of an organ or part) folded back upon itself

Origin of invaginate

C19: from Medieval Latin invāgīnāre, from Latin in- ² + vāgīna sheath

Derived forms of invaginate

  • invaginable, 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