/ Dictionary / Index M McClellan: Meaning and Definition of Find definitions for: Mc•Clel•lan Pronunciation: (mu-klel'un), [key] 1826–85, Union general in the American Civil War. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. McCauley McCloskey Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language