An example of down syndrome is a baby born with an extra chromosome.
Origin of down-syndrome
- After John Langdon Haydon Down (1828–1896), British physician
From American Heritage Dictionary of the English Language, 5th Edition
- 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.