Found 2 items, similar to by-product.
English → English (WordNet) Definition: by-product by-product n 1: a secondary and sometimes unexpected consequence [syn: byproduct] 2: a product made during the manufacture of something else [syn: byproduct, spin-off]
English → English (gcide) Definition: By-product By-product \By"-prod`uct\, n. A secondary or additional product; something produced, as in the course of a manufacture, in addition to the principal product. [1913 Webster]