progeria
Concise Oxford English Dictionary © 2008 Oxford University Press:
progeria /prə(ʊ)ˈdʒɪərɪə/
▶noun Medicine a rare syndrome in children characterized by physical symptoms suggestive of premature old age.
– origin early 20th cent.: mod. L., from Gk progērōs ‘prematurely old’.
'progeria' also found in these Oxford entries:

