/ Dictionary / Index M methacrylate resin: Meaning and Definition of Find definitions for: methac'rylate res"in Pronunciation: [key] an acrylic resin formed by polymerizing the esters or amides of methacrylic acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methacrylate methacrylic acid Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language