birth defect vs polysomy

Other hyponyms of birth defect include ablepharia, albinism, anencephalia, anencephaly, ametria, color blindness, color vision deficiency, colour blindness, colour vision deficiency, epispadias, clinocephalism, clinocephaly, clinodactyly, macroglossia, Down's syndrome, Down syndrome, mongolianism, mongolism, trisomy 21, acrocephaly, oxycephaly, cheiloschisis, cleft lip, harelip, cleft palate, amelia, meromelia, encephalocele, meningocele, myelomeningocele, plagiocephaly, hermaphrodism, hermaphroditism, pseudohermaphroditism, scaphocephaly, congenital heart defect, rachischisis, schistorrhachis, spina bifida, spinocerebellar disorder, hyperdactyly, polydactyly, syndactylism, syndactyly, ankyloglossia, tongue tie.