Down's syndrome

English

Alternative forms

Down syndrome, Down’s syndrome

Etymology

Named after John L.H. Langdon-Down (1828–1896), an English physician who described it in the late 1800s. The term was first used in 1961.

Proper noun

Down 's syndrome

(chiefly Britain, Canada) Condition caused by a chromosomal deficiency

Usage notes

More often known as Down syndrome in the US, and rarely so in the UK.

Synonyms

Down's, Down’s (informal)
trisomy 21

Translations

condition caused by chromosomal deficiency — see Down syndrome

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