/ Dictionary / Index A age group: Meaning and Definition of Find definitions for: age' group" Pronunciation: [key] persons of approximately the same age and often of the same sex, nationality, educational or social background, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. agee ageing Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language