"put into a sheath," 1650s, from Latin in- "in" (from PIE root *en "in") + verb from vagina "a sheath" (see vagina). Related: Invaginated; invagination.
The chrysalis is invaginated
some organs can invaginate
inure
inutile
inutility
invade
invader
invaginate
invalid
invalidate
invalidation
invalidity
invaluable
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