Down syndrome: Word of the day for October 7, 2016

Down syndrome , proper n :
(neurology, chiefly US) A medical condition caused by a chromosomal excess, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids, and typically have a delay in cognitive ability and physical growth. John Langdon Down, the English physician who first described the condition as a distinct form of mental disability in the 1860s, died on this day in 1896.