Zool. Pl. uncini. [L. uncīnus, f. uncus hook.] A hook-shaped part or process; esp. one of the hook-like teeth of molluscks.

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1851.  S. P. Woodward, Mollusca, I. 113. Lingual dentition like murex erinaceus; teeth transverse, 3 crested; uncini small, simple.

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1859.  J. R. Greene, Man. Anim. Kingd., I. Protozoa, 67. The ‘setæ’ or ciliary bristles of Oxytricha,… the ‘uncini’ (hooks) and ‘styles’ of Euplotes.

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1878.  Bell, trans. Gegenbaur’s Comp. Anat., 360. The outermost uncini of the transverse rows may … also be articulated.

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