Noun

(-)

Never having completed a pregnancy beyond 20 weeks.

*{{quote-journal, 2007, date=December 11, Craig Howard Kinsley, Massimo Bardi, Kate Karelina, Brandi Rima, Lillian Christon, Julia Friedenberg and Garrett Griffin, Motherhood Induces and Maintains Behavioral and Neural Plasticity across the Lifespan in the Rat, Archives of Sexual Behavior, url=, doi=10.1007/s10508-007-9277-x, volume=37, issue=1, pages=

, passage=In mammals, this transition from nulliparity to motherhood profoundly and fundamentally alters the female’s behavioral and motivational repertoire. }}