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English definition of “by-product”

by-product

noun [C]
 
 
/ˈbaɪˌprɒdʌkt/
PRODUCTION something that is produced as a result of making something else: a by-product of sth Selenium is a by-product of copper refining. oil/animal/chemical by-products
something not expected or not intended that happens as a result of something else: a by-product of sth Higher than expected tax revenues were a by-product of the booming economy.
(Definition of by-product from the Cambridge Business English Dictionary © Cambridge University Press)
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