invagination

IPA: ɪnvædʒʌnˈeɪʃʌn

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

Examples of "invagination" in Sentences

In neurulation, as in gastrulation, invagination is much in evidence.
The result was a wave of invagination that went further, and actually pinched off a ‘neural tube’ screenshots a to h, overleaf.
Origami-like folding, Oster-style invagination and pinching off: these are just some of the simplest tricks for building embryos.
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.
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.
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.
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.