noun Chemistry.
- an ester or salt derived from methacrylic acid.
noun
- any ester of methacrylic acid
- See methacrylate resin
- An ester of methacrylic acid, having the general formula C4H3O2R, where R is an organic radical. Methacrylates are used in the manufacture of plastics.
- A resin derived from methacrylic acid.