We found 33 dictionaries that define the word supplementary:

General (23 matching dictionaries)

1. supplementary: Longman Dictionary of Contemporary English
2. supplementary: Merriam-Webster
3. supplementary, supplementary: Oxford Learner's Dictionaries
4. supplementary: Collins English Dictionary
5. supplementary: Vocabulary.com
6. Supplementary, supplementary: Wordnik
7. supplementary: Cambridge Advanced Learner's Dictionary
8. supplementary: Wiktionary
9. supplementary: Webster's New World College Dictionary, 4th Ed.
10. supplementary: The Wordsmyth English Dictionary-Thesaurus
11. supplementary: Infoplease Dictionary
12. supplementary: Dictionary.com
13. supplementary: Cambridge Essential American English Dictionary
14. Supplementary: Wikipedia, the Free Encyclopedia
15. Supplementary: Online Plain Text English Dictionary
16. supplementary: Rhymezone
17. Supplementary: AllWords.com Multi-Lingual Dictionary
18. supplementary: Webster's 1828 Dictionary
19. supplementary: FreeDictionary.org
20. supplementary: Mnemonic Dictionary
21. supplementary: TheFreeDictionary.com

Business (3 matching dictionaries)

22. supplementary: Merriam-Webster Legal Dictionary
23. Glossary of Legal Terms (No longer online)
24. supplementary: Legal dictionary

Computing (1 matching dictionary)

25. supplementary: Encyclopedia

Medicine (3 matching dictionaries)

26. supplementary: Merriam-Webster Medical Dictionary
27. online medical dictionary (No longer online)
28. supplementary: Medical dictionary

Miscellaneous (1 matching dictionary)

29. Navajo Code Talkers' Dictionary (No longer online)

Science (2 matching dictionaries)

30. supplementary: MATH SPOKEN HERE!
31. supplementary, supplementary: PlanetMath Encyclopedia

Definitions from Wiktionary ( ) ▸ adjective:  Additional; added to supply what is wanted. ▸ noun:  Something additional; an extra. Similar: additional, supplemental, subsidiary, secondary, auxiliary, added, complemental, additionary, accessory, complementary, more... Opposite: primary, essential, fundamental, principal, main Types: vitamin, mineral, herb, supplement, nutrient, antioxidant, enzyme, amino acid, herbal supplement, more... Phrases: supplementary benefit, supplementary feeding, supplementary angles, supplementary conditions, supplementary proceedings, more... Adjectives: only, second, first, more, complementary, excellent, certain, additional, various, useful, important Colors:     orange,     blue,     red,     green,     yellow, more... ▸ Words similar to supplementary ▸ Usage examples for supplementary ▸ Idioms related to supplementary ▸ Wikipedia articles (New!) ▸ Popular adjectives describing supplementary ▸ Popular nouns described by supplementary ▸ Words that often appear near supplementary ▸ Rhymes of supplementary ▸ Invented words related to supplementary