gestational age /jestā″shənəl/ [L, gestare + aetas, time of life] , the age of a fetus or a newborn, usually expressed in weeks dating from the first day of the mother’s last menstrual period.

gestational age /jestā″shənəl/ [L, gestare + aetas, time of life] , the age of a fetus or a newborn, usually expressed in weeks dating from the first day of the mother’s last menstrual period.