We found 25 dictionaries that define the word supplementation:

General (17 matching dictionaries)

1. supplementation: Merriam-Webster
2. supplementation: Oxford Learner's Dictionaries
3. supplementation: Collins English Dictionary
4. supplementation: Vocabulary.com
5. Supplementation, supplementation: Wordnik
6. supplementation: Wiktionary
7. supplementation: Infoplease Dictionary
8. supplementation: Dictionary.com
9. Supplementation: Online Plain Text English Dictionary
10. supplementation: Webster's Revised Unabridged, 1913 Edition
11. supplementation: Rhymezone
12. Supplementation: AllWords.com Multi-Lingual Dictionary
13. supplementation: FreeDictionary.org
14. supplementation: Mnemonic Dictionary
15. Supplementation: TheFreeDictionary.com

Business (2 matching dictionaries)

16. supplementation: Legal dictionary
17. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

18. supplementation: Encyclopedia

Medicine (5 matching dictionaries)

19. supplementation: Merriam-Webster Medical Dictionary
20. Breast Cancer Talking Dictionary (No longer online)
21. supplementation: Dictionary of Cancer Terms
22. supplementation: Medical dictionary
23. Hyperdictionary (No longer online)

(Note: See supplement as well.)

Definitions from Wiktionary (supplementation) ▸ noun:  The act of supplementing ▸ noun:  Something added as a supplement Similar: subjunction, subjoining, Suppl., Suppl, suppletory, Supp., supplial, supplyment, suppletion, subsidization, more... Opposite: depletion, reduction, subtraction Types: vitamin D, omega-3 fatty acids, probiotics, iron, calcium, magnesium, protein powder, fiber, more... Phrases: calcium supplementation, more... Adjectives: dietary, oral, nutritional, folic, calcium, term, future, routine, periconceptional, additional, maternal ▸ Words similar to supplementation ▸ Usage examples for supplementation ▸ Idioms related to supplementation ▸ Wikipedia articles (New!) ▸ Popular adjectives describing supplementation ▸ Words that often appear near supplementation ▸ Rhymes of supplementation ▸ Invented words related to supplementation