: a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units

Examples of polymer in a Sentence

Recent Examples on the Web
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According to the company, the ingredient creates pathways that allow naturally occurring microorganisms to break down the polymer in environments with the conditions needed for biodegradation. — Alexandra Harrell, Footwear News, 2 Oct. 2026 During curing, low-molecular-weight polymers crosslink into a higher-molecular-weight polymer network. — Neetika Walter, Interesting Engineering, 1 Oct. 2026 Furthermore, intense solar ultraviolet (UV) radiation will break down the molecular bonds in organic polymers. — New Atlas, 26 Sep. 2026 The 18 lower receivers were described in the affidavit as unfinished polymer components that had not been serialized like ordinary completed lower receivers. — Antonio María Delgado, Miami Herald, 17 Sep. 2026 See All Example Sentences for polymer

Word History

Etymology

International Scientific Vocabulary, back-formation from polymeric, from Greek polymerēs having many parts, from poly- + meros part — more at merit entry 1

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of polymer was in 1866

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Cite this Entry

“Polymer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polymer. Accessed 9 Oct. 2026.

Kids Definition

: a chemical compound or mixture of compounds that is formed by combination of smaller molecules and consists basically of repeating structural units

Medical Definition

: a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units

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