plastic

https://doi.org/10.1351/goldbook.13915
Generic term used in the case of polymeric material that may contain other substances to improve performance and/or reduce costs.
Notes:
  1. The use of this term instead of polymer is a source of confusion and thus is not recommended.
  2. This term is used in polymer engineering for materials often compounded that can be processed by flow.
Source:
PAC, 2012, 84, 377. (Terminology for biorelated polymers and applications (IUPAC Recommendations 2012)) on page 394 [Terms] [Paper]