The term large for gestational age applies to babies whose birth weight lies above the 90th percentile for that gestational age. The phenotype is Human Phenotype Ontology id HP_0001520 (Large for gestational age). Also known as: Birth weight > 90th percentile, Birthweight > 90th percentile, Fetal macrosomia, Foetal macrosomia, Macrosomia, Macrosomia, neonatal.