variants or less commonly Down
often attributive
: down syndrome
a Down's patient

Word History

First Known Use

1967, in the meaning defined above

Time Traveler
The first known use of Down's was in 1967

Dictionary Entries Near Down's

Cite this Entry

“Down's.” Dictionary, Merriam-Webster, Accessed 28 Mar. 2023.

Medical Definition


variants or Down
: down syndrome
usually used before another noun
… the chance that a woman of 30 years will have a Down baby are one in 1,000.Paul Donohue, The Sun-Sentinel (Fort Lauderdale, Florida)
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