noun(plural villi /ˈvilī, ˈvilē/)
- 1 Anatomy Any of numerous minute elongated projections set closely together on a surface, typically increasing its surface area for the absorption of substances, in particular.More example sentences
- Mutants were observed as non-staining ribbons on the surface of the villus.
- And the tiny hair-like projections on the cells - the villi (VIL-li) - shrink and may even disappear.
- The colon can be identified by its size and the absence of mucosal folds and villi; the inner surface is smooth.
- 1.1A fingerlike projection of the lining of the small intestine.More example sentences
- The inner lining of the large intestine lacks the villi that characterize the small intestine.
- The lining of the small intestine is folded into finger-like projections, the villi, and deeper glands, the crypts.
- They are absorbed by the villi of the small intestine and carried by the portal vein to the liver.
- 1.2A fold of the chorion.More example sentences
- Amniotic fluid, chorionic villi, or fetal serum can be tested for evidence of West Nile virus infection.
- Placenta increta is the invasion of the myometrium by chorionic villi.
- If chorionic villi are not detected, ectopic pregnancy should be suspected.
- 2 [(usually in plural)] Botany A long slender hair.More example sentences
- All details of her woodcarvings, even the villi, or small hairs on the stem of each plant, are done by hand with a knife.
- The formation of the attaching filaments and villi on the surface of the oocyte of Oryzias latipes were studied electron-microscopically.
early 18th century: from Latin, literally 'shaggy hair'.
More definitions of villusDefinition of villus in:
- The British & World English dictionary