invaginate

in·vag·i·nate  (n-vj-nt)

tr. & intr.v. in·vag·i·nat·ed, in·vag·i·nat·ing, in·vag·i·nates

1. To enclose or become enclosed in or as if in a sheath.

2. To turn or become turned inward.

3. 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.

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[Medieval Latin invgnre, invgnt- : Latin in-, in; see in-² + Latin vgna, sheath.]

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invaginate

vb [ɪnˈvædʒɪˌneɪt]

1. (Medicine / Pathology) Pathol to push one section of (a tubular organ or part) back into itself so that it becomes ensheathed; intussuscept

2. (Life Sciences & Allied Applications / Biology) (intr) (of the outer layer of an organism or part) to undergo invagination

adj [ɪnˈvædʒɪnɪt -ˌneɪt]

(Life Sciences & Allied Applications / Biology) (of an organ or part) folded back upon itself

[from Medieval Latin invāgīnāre, from Latin in-² + vāgīna sheath]

invaginable  adj

Thesaurus

Verb	1.	invaginate - sheathe; "The chrysalis is invaginated" phytology, botany - the branch of biology that studies plants sheathe - cover with a protective sheathing; "sheathe her face"
	2.	invaginate - fold inwards; "some organs can invaginate" introvert draw in, retract - pull inward or towards a center; "The pilot drew in the landing gear"; "The cat retracted his claws" intussuscept - introvert or invaginate; "the intussuscepted gut"