chorionic villus

American  

noun

Embryology.

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

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Example Sentences

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 • Jan. 4, 2024

In the past, women had to undergo chorionic villus sampling, in which cells are taken from the placenta, or amniocentesis, which involves removing fluid from the womb, to test for the chromosomal abnormality.

From Washington Post • Mar. 5, 2018

The next step is diagnostic testing on cells from the fetus obtained through amniocentesis, which is like a needle biopsy through the belly, or chorionic villus sampling, which snips a bit of the placenta.

From Seattle Times • Dec. 6, 2012

It is already possible to determine the DNA sequence of a fetus by acquiring fetal cells through amniocentesis or chorionic villus sampling, which involves testing the placental tissue.

From New York Times • Jun. 7, 2012

Anyone who opposes them has to explain why women should instead have to endure the tubes and needles of amniocentesis or chorionic villus sampling.

From Slate • Jun. 1, 2012