Definition of chorionic villus sampling in English:

chorionic villus sampling

(also CVS)

Pronunciation /ˈˌkôrēˈˌänik ˈviləs ˈsamp(ə)liNG/ /ˈˌkɔriˈˌɑnɪk ˈvɪləs ˈsæmp(ə)lɪŋ/

noun

Medicine
  • A test made in early pregnancy to detect congenital abnormalities in the fetus. A tiny tissue sample is taken from the villi of the chorion, which forms the fetal part of the placenta.

    ‘Another prenatal test, called chorionic villus sampling, can diagnose most, but not all, of the same birth defects as amniocentesis.’
    • ‘These options include amniocentesis, early amniocentesis, chorionic villus sampling, and ultrasound examination.’
    • ‘Women at higher risk of carrying a baby with such conditions may opt for testing procedures like amniocentesis or chorionic villus sampling.’
    • ‘Some birth defects can be diagnosed before birth, using one or more prenatal tests including ultrasound, amniocentesis and chorionic villus sampling.’
    • ‘Prenatal tests called amniocentesis and chorionic villus sampling can diagnose Tay-Sachs before birth.’