1
: a salt or ester of methacrylic acid
2
: an acrylic resin or plastic made from a derivative of methacrylic acid

Examples of methacrylate in a Sentence

Recent Examples on the Web
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Their work ultimately led to the creation of the first synthetic hydrogel made from poly(2-hydroxyethyl methacrylate), or pHEMA. — Georgina Jedikovska, Interesting Engineering, 30 June 2026 Methyl methacrylate can cause damage to the skin and respiratory system. — Stephanie Pappas, Scientific American, 28 May 2026 Methyl methacrylate is a volatile, flammable liquid often used in the manufacture of resins and plastics, according to the EPA. — Christopher Cann, USA Today, 26 May 2026 Methyl methacrylate, the substance inside the tank at the center of the chemical incident at the Garden Grove site, is a VOC. — Matthew Rodriguez, CBS News, 25 May 2026 See All Example Sentences for methacrylate

Word History

Etymology

International Scientific Vocabulary

First Known Use

1865, in the meaning defined at sense 1

Time Traveler
The first known use of methacrylate was in 1865

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Cite this Entry

“Methacrylate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methacrylate. Accessed 28 Sep. 2026.

Medical Definition

methacrylate

noun
1
: a salt or ester of methacrylic acid
2
: an acrylic resin or plastic made from a derivative of methacrylic acid
especially : methyl methacrylate

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