adjective. occurring or existing before birth.
1. Noun, singular or mass Obstetricians make hospital rounds anytime their patient is in the hospital, whether in labor-and-deliver, postpartum or antepartum departments. 2. Adjective Left untreated, depression during pregnancy, or antepartum depression, can pose health risks for the baby, including premature birth, low birth weight and developmental problems, according to the American Pregnancy Association.