XXY-syndrome

1 definition found

From WordNet (r) 2.0 [wn]:

  XXY-syndrome
       n : syndrome in males that is characterized by small testes and
           long legs and enlarged breasts and reduced sperm
           production and mental retardation; a genetic defect in
           which an extra X chromosome (XXY) is present in the male
           [syn: {Klinefelter's syndrome}, {Klinefelter syndrome}]