üleliigsest kromosoom 21‑st (kahe asemel kolm) põhjustatud arenguhäire, millele on iseloomulikud tüüpilised näojooned, lühikesed sõrmed, liigeste lõtvus ja vaimne alaareng, a congenital condition characterized especially by developmental delays, usually mild to moderate impairment in cognitive functioning, short stature, upward slanting eyes, a flattened nasal bridge, br, genetic disorder, caused by the presence of an extra copy of chromosome 21 in a baby's cells, that affects a baby's normal physical development when it is still in the womb and causes mild to moderate