IPA: /ˈkɒprəˌdʌkt/
KK: /ˈkɒprəˌdʌkt/
A product that is made at the same time as another product, often in a manufacturing process.
In the production of cheese, whey is a common coproduct that can be used in various food products.
Coproduct → It is formed from "co-" (meaning together) and "product" (from Latin "productus", meaning brought forth or produced). The word refers to something that is produced together with another product.
Think of things being 'brought forth' ('product') 'together' ('co-') — that's why coproduct means something produced together.