Definitions

1. noun

Small, finger-like projections on the surface of an organ, especially the small intestine, involved in absorption and secretion.

“The villi in the small intestine are crucial for nutrient absorption.”

2. noun

Small, branching projections on the surface of a structure, such as a leaf or a root.

“The villi on the surface of the leaf help to increase its surface area for photosynthesis.”