Dictionary
pro•ge•ri•a
Pronunciation: (prō-jēr'ē-u), [key]—
n. Pathol.
a rare congenital abnormality characterized by premature and rapid aging, the affected individual appearing in childhood as an aged person and having a shortened life span.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.