/ Dictionary / Index M maximum principle: Meaning and Definition of Find definitions for: max'imum prin"ciple Pronunciation: [key] the theorem that a function of a complex variable that is analytic in a domain and on its boundary attains its maximum absolute value on the boundary. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. maximum likelihood estimation maximum-security Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language