/ Dictionary / Index L Liouville's theorem: Meaning and Definition of Find definitions for: Liouville's' the'orem Pronunciation: [key] — Math. Math. the theorem that every function of a complex variable, bounded and differentiable for all finite values of the variable, is a constant function. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Liouville lip Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language