introversion

Words with a similar base: introversion

'introversion'

[invagination.n.01] as in: the condition of being folded inward or sheathed

'introversion'

[invagination.n.02] as in: the folding in of an outer layer so as to form a pocket in the surface

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Examples:
the invagination of the blastula

'introversion'

[introversion.n.03] as in: (psychology) an introverted disposition; concern with one's own thoughts and feelings