byproduct
n. countable B2 Upper Intermediate US //ˈbaɪpɹɑdəkt// UK //bˈaɪpɹədˌʌkt// byprod·uct
n. something that is made or happens while you are trying to make or do something else. It is an extra result that you did not plan for.
n. a secondary or incidental product resulting from a manufacturing process or chemical reaction; by extension, any unintended consequence of an action.
Heat is a byproduct of using this machine.
The new highway was built for travel, but a positive byproduct was the growth of local businesses along the route.
While the software was designed purely for data encryption, its high processing speed became a valuable byproduct that attracted interest from the gaming industry.
From by- + product.
Usage
Often used with the preposition 'of' to indicate the primary process or source.