/ Dictionary / Index M Mindanao: Meaning and Definition of Find definitions for: Min•da•na•o Pronunciation: (min"du-nä'ō, -nou' Sp. mēn"dä-nou'), [key] — n. the second largest island of the Philippines, in the S part of the group. 10,908,730; 36,537 sq. mi. (94,631 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mindanao (Thesaurus) mind-altering Mindanao Deep Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language