- soft and pliable when heated, as some plastics, without any change of the inherent properties.
- a plastic of this type.
Origin of thermoplastic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (of a material, esp a synthetic plastic or resin) becoming soft when heated and rehardening on cooling without appreciable change of propertiesCompare thermosetting
- a synthetic plastic or resin, such as polystyrene, with these properties
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for thermoplastic
Online Etymology Dictionary, © 2010 Douglas Harper
- Of or relating to a compound that can be repeatedly made soft and hard through heating and cooling. Polyethylene and polystyrene are thermoplastic resins. Compare thermosetting.
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