Breadcrumb Home > Dictionary > Index B by-product: Meaning and Definition of Find definitions for: by-prod•uct Pronunciation: (bī'prod"ukt), [key] — n. a secondary or incidental product, as in a process of manufacture. the result of another action, often unforeseen or unintended. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: by-product (Thesaurus) by-plot Byrd TrendingHere are the facts and trivia that people are buzzing about. The Book of 1 Corinthians: Summary Current Events This Week: June 2023 Languages Spoken in Each Country of the World Aesop's Fables: Aesop's Fables Milestones in Environmental Protection The 12 Labors of Hercules (In Order) ✖ Related Content Daily Word Quiz: concatenate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language