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Related to villi: Arachnoid villi, Chorionic villi


 [vil´i] (L.)
plural of villus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Plural of villus.
Farlex Partner Medical Dictionary © Farlex 2012


Plural of villus.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Plural of villus A small vascular protrusion, especially from the free surface of a membrane
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Plural of villus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(vil'us) plural.villi [L., tuft of hair]
A small fold or projection of some mucous membranes.

arachnoid villus.

Arachnoid granulation.

chorionic villus.

One of the tiny vascular projections of the chorionic surface that become vascular and help to form the placenta.
See: embryo for illus.; chorion
Enlarge picture

intestinal villus.

One of the multiple, minute projections of the intestinal mucosa into the lumen of the small intestine. These projections increase the surface area for absorption of water and nutrients; each contains a capillary network and a lacteal.
See: illustration

synovial villus.

One of the thin projections of the synovial membrane into the joint cavity.
Medical Dictionary, © 2009 Farlex and Partners


Small finger-like processes on a surface, as in the small intestine, the PLACENTA, the tongue and the CHOROID PLEXUSES of the brain.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


Tiny, finger-like projections that enable the small intestine to absorb nutrients from food.
Mentioned in: Celiac Disease
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Moreover, the fibrinoid necrosis of placental villi is a highly characteristic lesion.
Fibrotic, avascular villi similar to those seen in CMV infection are also a hallmark of fetal thrombotic vasculopathy.
In other words, despite continuing claims or beliefs into that possibility, villi are never individually reduced to nothing.
Underneath the villi is a layer of collagen and then a muscular
At 16 - 18 weeks, there was an increase in the number of villi and intestinal glands.
In duodenum, iron deposits were observed in the lumen, epithelium and also at villi tops.
In addition to convoluted outlines of chorionic villi, villous trophoblastic pseudoinclusions, and clusters of villous cytotrophoblasts, the previously unreported focal pseudovillous papilliform trophoblastic proliferation of the undersurface of the chorionic plate and clustering of perpendicularly oriented sclerotic chorionic villi in the chorion laeve were observed in this double trisomy case.
When the researchers added Wnt to Petri dishes housing aged stem cells, those stem cells began growing crypts and villi in patterns resembling their younger counterparts.
Villi, epithelium, and glands: Villi develop at the duodenum at first as a result of the proliferation of mesenchymal tissue beneath the epithelium (9).