noun
plastics; plastic material
Technical term for plastic materials, especially in chemistry and materials science.
可塑物質は熱を加えると柔らかくなる。
Plastic materials become soft when heated.
プラスチック is the common everyday word for plastic; 可塑物質 is a more formal, technical term.
Compound of 可塑 (plasticity) and 物質 (material). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.