Down syndrome

[медицина]; то же, что и Down's syndrome - болезнь Дауна

Большой англо-русский словарь

Down syndrome

noun Etymology: J. L. H. Down died 1896 English physician a congenital condition characterized by moderate to severe mental retardation, slanting eyes, a broad short skull, broad hands with short fingers, and trisomy of the human chromosome numbered 21 — called also Down's syndrome

Merriam-Webster's Collegiate Dictionary