Pronunciation: ( jer"ē-a'triks, jēr"-), [key]
—n. (used with a sing. v.)
1. the branch of medicine dealing with the diseases, debilities, and care of aged persons.
2. the study of the physical processes and problems of aging; gerontology.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.