polymethyl methacrylate

noun

poly·​meth·​yl methacrylate ˈpä-lē-ˌme-thəl- 

: a thermoplastic resin of polymerized methyl methacrylate which is characterized by its optical clarity

Examples of polymethyl methacrylate in a Sentence

Recent Examples on the Web

At the time of publication, the study’s algorithm was able to identify seven types of plastics: polyamide, polypropylene, polyethylene, polymethyl methacrylate, polyvinyl chloride, polystyrene, and polyethylene terephthalate. —Cnn.com Wire Service, The Mercury News, 9 Jan. 2024

Other plastics confirmed in the water in microscopic quantities include polystyrene, polyvinyl chloride and polymethyl methacrylate, also known as plexiglass. —Corinne Purtill, Los Angeles Times, 8 Jan. 2024

One substance produced this way was polymethyl methacrylate, an acrylic polymer better known as plexiglass. —Sophie Bushwick, Scientific American, 26 Aug. 2022

Among options under consideration by the company are the sale of a polymethyl methacrylate division worth more than 1 billion euros ($1.1 billion) that makes glass-like polymers, the people said. —Scott Deveau, Bloomberg.com, 10 May 2020

So avoid products with these P's: polyethylene, polypropylene, polyethylene terephthalate, and polymethyl methacrylate. —Cotton Codinha, Allure, 8 Apr. 2019

Word History

First Known Use

1936, in the meaning defined above

Medical Definition

polymethyl methacrylate

noun

poly·​meth·​yl methacrylate ˈpäl-i-ˌmeth-əl- 

: a thermoplastic resin of polymerized methyl methacrylate that is used especially in hard contact lenses and in prostheses to replace bone