methacrylic acid

[ meth-uh-kril-ik, meth- ]
/ ˈmɛθ əˈkrɪl ɪk, ˌmɛθ- /

noun Chemistry.

a colorless, liquid acid, C4H6O2, produced synthetically, whose methyl ester, methyl methacrylate, polymerizes to yield a clear plastic.
Compare Lucite, Plexiglas.

Origin of methacrylic acid

First recorded in 1860–65; meth- + acrylic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for methacrylic acid

methacrylic acid
/ (ˌmɛθəˈkrɪlɪk) /


a colourless crystalline water-soluble substance used in the manufacture of acrylic resins; 2-methylpropenoic acid. Formula: CH 2 :C(CH 3)COOH
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for methacrylic acid

methacrylic acid
[ mĕth′ə-krĭlĭk ]

A colorless liquid used in the manufacture of methacrylate esters, resins and plastics. Chemical formula: C4H6O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.