Meaning of “by-product” in the English Dictionary

(Definition of “by-product” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"by-product" in Business English

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by-productnoun [ C ]

uk /ˈbaɪˌprɒdʌkt/ us

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)