I. |thərmə|plastik adjective
Etymology: therm- + plastic
: having the property of softening or fusing when heated and of hardening and becoming rigid again when cooled
thermoplastic synthetic resins
thermoplastic materials can be remelted and cooled time after time without undergoing any appreciable chemical change — J.S.Campbell
— distinguished from thermoset and thermosetting
• ther·mo·plas·tic·i·ty ˌ ̷ ̷ ̷ ̷ˌplaˈstisəd.ē noun
II. noun
: a thermoplastic material (as gutta-percha, cellulose acetate, or polyethylene)