/ Dictionary / Index M metallide: Meaning and Definition of Find definitions for: met•al•lide Pronunciation: (met'l-īd"), [key] — -lid•ed, -lid•ing. to provide (a metal or alloy) with a diffused coating of a metal or metalloid by electrolysis at high temperature in order to impart a particular surface property to the base metal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metallic wood-boring beetle metalliferous Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language