noun Date: 1936 a thermoplastic resin of polymerized methyl methacrylate which is characterized by its optical clarity
POLYMETHYL METHACRYLATE
Meaning of POLYMETHYL METHACRYLATE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012