Large for gestational age

A fetus or infant that is larger or more developed than normal for the baby's gestational age. Gestational age is the common term used during pregnancy to describe how far along the pregnancy is. It is measured in weeks, from the first day of the woman's last menstrual cycle to the current date. A fetus or infant larger than expected for the age and gender, or with a birth weight above the 90th percentile, is referred to as LGA (large for gestational age).