Definitions for villusˈvɪl əs; ˈvɪl aɪ
Random House Webster's College Dictionary
vil•lusˈvɪl əs; ˈvɪl aɪ(n.)(pl.)vil•li
any of the fingerlike projections on the surface of certain membranes, esp. on the mucous membrane of the small intestine, functioning to increase the area for the absorption, secretion, or exchange of materials.
any of the long, soft, straight hairs covering the fruit, flowers, and other parts of certain plants.
Origin of villus:
1695–1705; < L: shaggy hair, thick nap
a minute hairlike projection on mucous membrane
a small projection from a mucous membrane, particularly those found in the intestines
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
fine hairs on plants, resembling the pile of velvet