Word Study
by-product
CIDE DICTIONARY
by-product, n.
A secondary or additional product; something produced, as in the course of a manufacture, in addition to the principal product. [1913 Webster]
OXFORD DICTIONARY
by-product, n.
1 an incidental or secondary product made in the manufacture of something else.
2 a secondary result.
1 an incidental or secondary product made in the manufacture of something else.
2 a secondary result.
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