We found 25 dictionaries that define the word by-product:

General (19 matching dictionaries)

1. by-product: Merriam-Webster
2. by-product, by-product: Collins English Dictionary
3. by-product: Vocabulary.com
4. By-Product, By-product, by-product: Wordnik
5. by-product: Cambridge Advanced Learner's Dictionary
6. by-product: Wiktionary
7. by-product: The Wordsmyth English Dictionary-Thesaurus
8. by-product: Infoplease Dictionary
9. by-product: Dictionary.com
10. by-product: Cambridge Essential American English Dictionary
11. By-product: Wikipedia, the Free Encyclopedia
12. By-product: Online Plain Text English Dictionary
13. by-product: Webster's Revised Unabridged, 1913 Edition
14. by-product: Rhymezone
15. By-product: AllWords.com Multi-Lingual Dictionary
16. by-product: FreeDictionary.org
17. by-product: Mnemonic Dictionary
18. by-product: TheFreeDictionary.com

Business (3 matching dictionaries)

19. MoneyGlossary.com (No longer online)
20. Construction Term Glossary (No longer online)
21. by-product: Legal dictionary

Computing (1 matching dictionary)

22. by-product: Encyclopedia

Medicine (2 matching dictionaries)

23. online medical dictionary (No longer online)
24. by-product: Medical dictionary

(Note: See by-products as well.)

Definitions from WordNet ( ) ▸ noun:  a product made during the manufacture of something else ▸ noun:  a secondary and sometimes unexpected consequence Similar: spin-off, remixture, subreaction, aggeneration, recycling, resynthesis, coprocessing, outcross, cross-contaminator, reverse import, more... Opposite: main product, primary product, core product Types: slag, slurry, grit, dross, scum, sludge, more... Phrases: Disinfection by-product, more... Colors:     gray,     brown,     beige,     olive,     rust, more... ▸ Words similar to by-product ▸ Usage examples for by-product ▸ Idioms related to by-product ▸ Wikipedia articles (New!) ▸ Popular adjectives describing by-product ▸ Words that often appear near by-product ▸ Rhymes of by-product ▸ Invented words related to by-product