Latin, meaning a
woman who has not given
birth. Medically speaking, a woman who has not given birth to a viable infant, that is one weighing 500 grams or more at 20 weeks
gestation or more.
Not to be confused with
nulligravida: a woman who has never been pregnant. Nullipara is the more popular term to describe a woman who is
childfree or
childless by choice.