Having the shape of a cotyla or cup; cup-shaped or resembling a small socket.
From cotyla + -form (from Latin forma meaning 'shape'). The -form suffix means 'having the shape or form of,' as in 'cruciform' (cross-shaped) or 'uniform' (one-shaped).
The -form suffix lets scientists describe shapes precisely—when you say something is cotyliform, you're saying it's specifically cup-shaped in the anatomical sense, much more precise than just saying 'rounded.'
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