/ Dictionary / Index M Melanesia: Meaning and Definition of Find definitions for: Mel•a•ne•sia Pronunciation: (mel"u-nē'zhu, -shu), [key] — n. one of the three principal divisions of Oceania, comprising the island groups in the S Pacific NE of Australia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: melanesia (Thesaurus) Melanchthon Melanesian Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language