(~s)
Note: in AM and sometimes in BRIT, use 'byproduct'
1.
A ~ is something which is produced during the manufacture or processing of another product.
The raw material for the tyre is a ~ of petrol refining.
N-COUNT: oft N of n
2.
Something that is a ~ of an event or situation happens as a result of it, although it is usually not expected or planned.
A ~ of their meeting was the release of these fourteen men.
= side-effect
N-COUNT: oft N of n