[ in-vaj-uh-ney-shuhn ]

  1. the act or process of invaginating.

  2. Embryology. the inward movement of a portion of the wall of a blastula in the formation of a gastrula.

  1. a form or shape resulting from an infolded tissue.

Origin of invagination

First recorded in 1650–60; invaginate + -ion

Words Nearby invagination Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for invagination


/ (ɪnˌvædʒɪˈneɪʃən) /

  1. pathol the process of invaginating or the condition of being invaginated; intussusception

  2. pathol an invaginated organ or part

  1. an infolding of the outer layer of cells of an organism or part of an organism so as to form a pocket in the surface, as in the embryonic development of a gastrula from a blastula

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