invaginate

• vt. 使入鞘；收进鞘中
• vi. 收进鞘中；陷入
• adj. 入鞘的；摄取的；缩入的

in-,进入，使，-vagin,剑鞘，词源同vagina,vanilla.

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.

1. Some organs can invaginate.

有些风琴可以折叠.

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