ə̇nˈvajə̇ˌnāt, usu -ād.+V verb
( -ed/-ing/-s )
Etymology: Medieval Latin invaginatus, past participle of invaginare, from Latin in- in- (II) + vagina sheath — more at vagina
transitive verb
1. : enclose , sheathe
external … sex organs of the male, contrasted to the invaginated organs of the female — Year Book of Neurology, Psychiatry & Neurosurgery
2. : to fold in so that an outer becomes an inner surface : intussuscept
invaginate the sac into the lumen — E.A.Graham
intransitive verb
: to become sheathed or infolded
the sphere of cells then invaginated to give a cuplike double-walled gastrula — S.F.Mason