/ Dictionary / Index M Mauna Kea: Meaning and Definition of Find definitions for: Mau•na Ke•a Pronunciation: (mou'nu kā'u, mô'nu kē'u), [key] a dormant volcano on the island of Hawaii. 13,784 ft. (4201 m). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. maun Mauna Kea Observatory Related Content Daily Word Quiz: boorish Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language