n pl , villi usually pl
1 (Zoology, anatomy) any of the numerous finger-like projections of the mucous membrane lining the small intestine of many vertebrates
2 any similar membranous process, such as any of those in the mammalian placenta
3 (Botany) any of various hairlike outgrowths, as from the stem of a moss (C18: from Latin: shaggy hair)
chorionic villus sampling
n a method of diagnosing genetic disorders early in pregnancy by the removal by catheter through the cervix or abdomen of a tiny sample of tissue from the chorionic villi, (Abbrev.)
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