Definitions of by-product
  1. noun
    a secondary and sometimes unexpected consequence
    synonyms: byproduct
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    a secondary phenomenon that is a by-product of another phenomenon
    type of:
    consequence, effect, event, issue, outcome, result, upshot
    a phenomenon that follows and is caused by some previous phenomenon
  2. noun
    a product made during the manufacture of something else
    synonyms: byproduct, spin-off
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    type of:
    product, production
    an artifact that has been created by someone or some process
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