byproduct

a useless or worthless byproduct

The formation and variation rule of disinfection byproduct in chloramination process were studied.

Sugar and its byproduct are the basis of the island’s economy.

Becoming a baseball fan was a byproduct of my research into sport on TV.

There are lots of phenolic byproducts in the production of mononitrotoluene,which have high toxicity and are difficult to be treated.

Electron-withdrawing groups (F, CF 3) decreased the efficiency of the transformation, which has as byproducts benzonitrile and phenethyl N -acetamide.