chorionic villus

noun

, Embryology.

1. one of the branching outgrowths of the chorion that, together with maternal tissue, form the placenta.

Example Sentences

CVS or chorionic villus sampling, is offered at 10 to 13 weeks gestation.

From Seattle Times

In addition to amniocentesis, which removes and tests a small sample of cells from amniotic fluid, these also include CVS, or chorionic villus sampling, which tests a small piece of tissue from the placenta.

From Seattle Times

This restriction stems from the fact that the analysis currently necessitates either chorionic villus sampling or amniocentesis, both procedures associated with discomfort and a slight risk of miscarriage.

From Science Daily

The same would be true of women who have prenatal testing of fetuses with amniocentesis or chorionic villus sampling, known as C.V.S.

From New York Times

Zernicka-Goetz writes compellingly about her own experiences of a pregnancy in which the fetus was diagnosed through chorionic villus sampling with a risk of severe chromosomal abnormality.

From Nature