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One of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface.

One of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface.

A minute projection from the surface, especially of a mucous membrane; see under villi.

Singular of villi.

pl. villi. A vascular chorionic tuft.

A minute club-shaped projection from the mucous membrane of the intestine.

PL, villi. A tuft of hair, a hairlike growth or process, especially from a membranous surface.