Villus (Latin: "shaggy hair", pl.: villi) may refer to:

  • Intestinal villus, refers to any one of the small, finger-shaped outgrowths of the epithelial lining of the wall of the intestine. Clusters of projections are referred as intestinal villi.
  • Chorionic villi, found on the surface of the outermost membrane (the chorion) of the fetus
  • Arachnoid villi, located on the arachnoid membrane of the brain
  • Villiform teeth, small, slender teeth forming velvety bands.

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