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Webster 1913 Edition


Invagination

In-vagˊi-na′tion

,
Noun.
[L. pref.
in-
+
vagina
sheath.]
1.
(Biol.)
The condition of an invaginated organ or part.
☞ In
embolic invagination
, one half of the blastosphere is pushed in towards the other half, producing an embryonic form known as a gastrula. – In
epibolic invagination
, a phenomenon in the development of some invertebrate ova, the epiblast appears to grow over or around the hypoblast.

Definition 2024


invagination

invagination

English

Noun

invagination (plural invaginations)

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