polymethyl methacrylate

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, polymethyl methacrylate (pol′ē-meth′ĭl-meth″ak′rĭ-lāt″) [ poly- + methyl + methacryl(ic acid) + -ate],


C5H8O2, a transparent, colorless acrylic polymer. It is used in optics and ophthalmology to make intraocular lenses for cataract surgery, in dentistry as a denture base material, in cosmetic surgery as a soft-tissue filler, and in the fabrication of dialysis membranes with high biocompatibility.
Medical Dictionary, © 2009 Farlex and Partners

polymethyl methacrylate (PMMA)

Polymerized methyl methacrylate forming a light transparent thermoplastic material used in the manufacture of some spectacle lenses and formerly hard contact lenses. See modulus of elasticity; plastic spectacle frame.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Acrylic glass (polymethyl-methacrylate) is used to make car headlamps, tail-lights, dashboards and household appliances such as DVDs and bath tubs.
The U12 life delivers a dual finish featuring soft, subtle stripes on an acrylic glass unibody with a metal-like design surrounding a vivid, 18:9 full-body display.
The device comes with an acrylic glass rear but only the HTC Desire 12 Plus gets a dual rear camera and a fingerprint scanner.
Another section has a ceiling designed with frosted acrylic glass, surrounded with blue LED lighting to enhance an intimate outdoor ambiance,' Co noted.
For Laube, this meant departing from the classical canvas and turning to acrylic glass as his carrier medium, allowing him to more deeply explore the themes of light, movement, color and space and to achieve a dematerialization of the work.
Hanging on the wall nearby was Keller's Stack Relief (Kai Zuckerberg + Bushwick Kutcher), 2015, a precise jigsaw of birch plywood, black anodized aluminum, acrylic glass, Hi-Macs acrylic stone, high-density polyurethane foam, and stainless steel.
Sales of other acrylic glass styles -- Old Fashion, goblets and champagne glasses -- also increased during the 12-month period ending April 2014, reports the Port Washington, N.Y.-based market research firm.
Shoppers and staff sustained deep cuts and bruises from splinters of the 20cm thick acrylic glass. One Beijing tourist was taken to hospital with fractured bones.
The people, especially children and women, expressed great interest in the newly inducted captives, including the pair of white lion which had been imported from South Africa and kept in an especially build acrylic glass enclosure for providing a new and unique experience of watching 'king of jungle' to the visitors.
On 31 May 2006, the Commission found that Arkema and its subsidiaries - Altuglas International SA and Altumax Europe SAS - as well as Total SA and Elf Aquitaine SA, their parent companies at the time, had participated in a cartel in the methacrylate sector (also known as acrylic glass) from 23 January 1997 to 12 September 2002.
Then Yi and Li used a commercially available milling tool with a diamond blade to cut the shape from a piece of the common thermoplastic material polymethyl methacrylate, a transparent plastic that is sometimes called acrylic glass. The machine shaved bits of plastic from the lens in increments of 10 nanometers, or 10 billionths of a meter - a distance about 5,000 times smaller than the diameter of a human hair.
Billingham-based acrylics manufacturer Lucite is among five firms to be fined by the European Commission for running an illegal price-fixing cartel in the acrylic glass market.