- a variation of Down syndrome.
Down's syndrome
Britishnoun
Usage
Although the condition was once generally known as mongolism , this term has been considered offensive since the early 1960s. The terms Down's syndrome or ( US ) Down syndrom are now preferred.
Etymology
Origin of Down's syndrome
C19: after John Langdon-Down (1828–96), English physician
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Ailith Harley-Roberts, whose daughter Thalia has Down's syndrome, says the government plans have prompted concern among parents she knows through her charity Sunshine and Smiles, which supports families like hers.
From BBC • Feb. 24, 2026
Carers, parents and other young people with conditions like cerebral palsy and Down's syndrome are also welcome.
From BBC • Feb. 6, 2026
Ellie has had hundreds of messages over the last few months from families who have relatives with Down's syndrome.
From BBC • Dec. 31, 2025
"On an Aitch level, I feel like I have got this calling to raise awareness for Down's syndrome and I feel that's the perfect place."
From BBC • Nov. 11, 2025
Ms Pickard, 41, who also works for Mencap Cymru, said having Down's syndrome was like a hurdles race.
From BBC • Sep. 9, 2025
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.