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English definition of “by-product”

by-product

noun [C]     /ˈbaɪˌprɒd.ʌkt/ US  /-ˌprɑː.dəkt/
something that is produced as a result of making something else , or something unexpected that happens as a result of something: Buttermilk is a by-product of making butter . Illness is one of the by-products of overcrowded housing .Outcomes and consequencesProducts and producersBuying and selling in general
(Definition of by-product noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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