To turn or fold inwardly.
To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula.
To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.
Having one portion of a hollow organ drawn back within another portion.
sheathed
To upturn convention from the foundation by undermining it (literally, to turn from beneath).
To overturn from the foundation; to overthrow; to ruin utterly.
To pervert, as the mind, and turn it from the truth; to corrupt; to confound.
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