/ Dictionary / Index G gerontology: Meaning and Definition of Find definitions for: ger•on•tol•o•gy Pronunciation: (jer"un-tol'u-jē, jēr"-), [key] — n. the branch of science that deals with aging and the problems of aged persons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gerontology (Thesaurus) gerontogeous gerontomorphosis Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language