• A long or larger molecule consisting of a chain or network of many repeating units, formed by chemically bonding together many identical or similar small molecules called monomers. A polymer is formed by polymerization, the joining of many monomer molecules.
  • A material consisting of such polymer molecules.


  • poly- + -mer, from Ancient Greek πολύς ("many") + μέρος. Coined in 1833 by Jöns Jacob Berzelius, although his definition was quite different from the modern one.

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