from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Becoming soft when heated and hard when cooled.
  • noun A thermoplastic resin, such as polystyrene or polyethylene.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective softening when heated and hardening when cooled
  • noun A plastic with this property.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a material that softens when heated and hardens again when cooled
  • adjective having the property of softening or fusing when heated and of hardening and becoming rigid again when cooled


from Wiktionary, Creative Commons Attribution/Share-Alike License

thermo- +‎ plastic


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