noun
byproduct; secondary product
Refers to a substance or item produced incidentally during the manufacture of something else. Often used in technical or industrial contexts.
この化学反応では、副生物として水が生成される。
In this chemical reaction, water is produced as a byproduct.
製鉄の過程で副生するガスは燃料として利用される。
The gas produced as a byproduct in the steelmaking process is used as fuel.