by-product

noun by-prod·uct \ -ˌprä-(ˌ)dəkt \
1 : something produced in a usually industrial or biological process in addition to the principal product
  • a chemical by-product of the oil-refining process
2 : a secondary and sometimes unexpected or unintended result
  • The loss of jobs is an unfortunate by-product of technological advancements in the industry.

First Known Use of by-product

1857

in the meaning defined at sense 1

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BY-PRODUCT Defined for English Language Learners

by-product

  • : something that is produced during the production or destruction of something else

  • : something that happens as a result of something else


BY-PRODUCT Defined for Kids

by-product

noun by-prod·uct \ ˈbī-ˌprä-dəkt \
: something produced (as in manufacturing) in addition to the main product


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