invaginate

[v. in-vaj-uh-neyt; adj. in-vaj-uh-nit, -neyt] /v. ɪnˈvædʒ əˌneɪt; adj. ɪnˈvædʒ ə nɪt, -ˌneɪt/
verb (used with object), invaginated, invaginating.
1.
to insert or receive, as into a sheath; sheathe.
2.
to fold or draw (a tubular organ) back within itself; intussuscept.
verb (used without object), invaginated, invaginating.
3.
to become invaginated; undergo invagination.
4.
to form a pocket by turning in.
adjective
5.
folded or turned back upon itself.
6.
sheathed.
Origin
1650-60; < Medieval Latin invāgīnātus, past participle of invāgīnāre to sheathe. See in-2, vaginate
Related forms
uninvaginated, adjective
British Dictionary definitions for invaginate

invaginate

verb (ɪnˈvædʒɪˌneɪt)
1.
(pathol) to push one section of (a tubular organ or part) back into itself so that it becomes ensheathed; intussuscept
2.
(intransitive) (of the outer layer of an organism or part) to undergo invagination
adjective (ɪnˈvædʒɪnɪt; -ˌneɪt)
3.
(of an organ or part) folded back upon itself
Derived Forms
invaginable, adjective
Word Origin
C19: from Medieval Latin invāgīnāre, from Latin in-² + vāgīna sheath
Word Origin and History for invaginate
v.

1650s, from Medieval Latin invaginatus, past participle of invaginare "to put into a sheath," from Latin in- "in" (see in- (2)) + vagina "a sheath" (see vagina). Related: Invaginated; invagination.

invaginate in Medicine

invaginate in·vag·i·nate (ĭn-vāj'ə-nāt')
v. in·vag·i·nat·ed, in·vag·i·nat·ing, in·vag·i·nates
To infold or become infolded so as to form a hollow space within a previously solid structure, as in the formation of a gastrula from a blastula.