by-product
Concise Oxford English Dictionary © 2008 Oxford University Press:
by-product
▶noun
- 1 an incidental or secondary product made in the manufacture of something else.
- 2 an unintended but inevitable secondary result.
'by-product' also found in these Oxford entries:
breeder
- condensation
- dioxin
- epiphenomenon
- fusel oil
- glycerol
- off-gas
- spillover
- styrene
