Definition of "terpolymer" []

• A polymer that consists of three distinct monomers. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The agency wants the fluids to be tested with ethylene, propylene, and diene terpolymer (EPDM) rubber which is increasingly used in brake seals, instead of styrene-butadiene rubber (SBR)."
• "This includes an adhesive for backsheets (TAKELAC? and TAKENATE?), ethylene-propylene-diene terpolymer (Mitsui EPT) and thermoplastic olefinic elastomer (MILASTOMER?) used as a gasket material and so on."
• "Parker's Feltner notes that, "Seal manufacturers are still offering the standards-ethylene propylene terpolymer (EPDM), polytetrafluoroethylene (PTFE), nitrile and other sealing materials."