Ability of a material to become soft when heated and hard when cooled without undergoing chemical change. While the material is soft, it can be reformed or molded. As used in the coatings industry today, the original meaning of the term thermoplastic has changed somewhat. It is now used to classify coating types according to how the resins cure, and the solubility of the cured film. The term thermoplastic is virtually synonymous with the term non-convertible.