invagination

invagination

[in-vaj-uh-ney-shuhn]
noun
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.
3.
Pathology, intussusception ( def 3 ).
4.
a form or shape resulting from an infolded tissue.

Origin:
1650–60; invaginate + -ion

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World English Dictionary
invagination (ɪnˌvædʒɪˈneɪʃən)
 
n
1.  pathol the process of invaginating or the condition of being invaginated; intussusception
2.  pathol an invaginated organ or part
3.  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

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American Heritage
Medical Dictionary

invagination in·vag·i·na·tion (ĭn-vāj'ə-nā'shən)
n.

  1. The act or process of invaginating or the condition of being invaginated.

  2. An invaginated organ or part.

  3. The infolding of a portion of the outer layer of a blastula in the formation of a gastrula.

The American Heritage® Stedman's Medical Dictionary
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