Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The act or process of invaginating or the condition of being invaginated.
  • noun An invaginated organ or part.
  • noun Embryology The infolding of a portion of the outer layer of a blastula in the formation of a gastrula.

from The Century Dictionary.

  • noun The act of introverting or sheathing, or the state of being sheathed; insertion or reception as into a sheath; intussusception.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Biol.) The condition of an invaginated organ or part.
  • noun The inward movement of the wall of a tissue or cell, to form a cavity; also, the cavity thus formed.
  • noun (Biol., Embryology) The inward movement of one part of the wall of a blastula, to form a gastrula; the process of gastrulation, in which layers of the ovum are differentiated.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun medicine The process where an anatomical part invaginates upon itself or into another structure.
  • noun One of the methods by which the various germinal layers of the ovum are differentiated.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the folding in of an outer layer so as to form a pocket in the surface
  • noun the condition of being folded inward or sheathed

Etymologies

Sorry, no etymologies found.

Examples

  • Upper blastopore lip still engaged in invagination was implanted in a different orientation in relation to the host embryo - crosswise and opposite to the orientation of the later primary primordia.

    Hans Spemann - Nobel Lecture

  • A. de Boer 2007 The trans-envelope Tol-Pal complex is part of the cell division machinery and required for proper outer-membrane invagination during cell constriction in E. coli.

    Flagellum evolution -- how's your German? - The Panda's Thumb

  • The result was a wave of invagination that went further, and actually pinched off a ‘neural tube’ screenshots a to h, overleaf.

    THE GREATEST SHOW ON EARTH

  • Also in favour of the origami analogy, folding, invagination and turning inside out are some of the favourite tricks used by embryonic tissues when making a body.

    THE GREATEST SHOW ON EARTH

  • Also in favour of the origami analogy, folding, invagination and turning inside out are some of the favourite tricks used by embryonic tissues when making a body.

    THE GREATEST SHOW ON EARTH

  • Origami-like folding, Oster-style invagination and pinching off: these are just some of the simplest tricks for building embryos.

    THE GREATEST SHOW ON EARTH

  • The result was a wave of invagination that went further, and actually pinched off a ‘neural tube’ screenshots a to h, overleaf.

    THE GREATEST SHOW ON EARTH

  • You can easily see how this invagination could be a useful move in inflating origami, and it does indeed play a major role in both gastrulation and neurulation.

    THE GREATEST SHOW ON EARTH

  • Origami-like folding, Oster-style invagination and pinching off: these are just some of the simplest tricks for building embryos.

    THE GREATEST SHOW ON EARTH

  • In neurulation, as in gastrulation, invagination is much in evidence.

    THE GREATEST SHOW ON EARTH

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