From Longman Dictionary of Contemporary Englishwaste productˈwaste ˌproduct noun [countable] SGEa useless material or substance that is produced during the process of making something else → by-product nuclear waste products
Examples from the Corpus
waste product• It is excreted in the urine as a waste product of creatine. 194.• Kidneys separate water and waste products from the blood.• It is the biggest single concept, many others being devoted to using methane gas at waste product dumps. 