invagination : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: invagination	by the DICT Development Group
2 results for invagination
From WordNet (r) 3.0 (2006) [wn]:
invagination n the condition of being folded inward or sheathed [syn: invagination, introversion] the folding in of an outer layer so as to form a pocket in the surface; "the invagination of the blastula" Synonym(s): invagination, introversion, intussusception, infolding
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Invagination \Invag`ina"tion\, n. [L. pref. in- + vagina sheath.] 1. (Biol.) The condition of an invaginated organ or part. 2. (Biol.) One of the methods by which the various germinal layers of the ovum are differentiated. Note: 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.