We found 21 dictionaries that define the word mastered:

General (15 matching dictionaries)

1. mastered: Merriam-Webster
2. mastered: Collins English Dictionary
3. mastered: Vocabulary.com
4. Mastered, mastered: Wordnik
5. mastered: Cambridge Advanced Learner's Dictionary
6. mastered: Wiktionary
7. Mastered, mastered: Dictionary.com
8. mastered: Cambridge Essential American English Dictionary
9. Mastered: Wikipedia, the Free Encyclopedia
10. Mastered: Online Plain Text English Dictionary
11. mastered: Rhymezone
12. Mastered: AllWords.com Multi-Lingual Dictionary
13. mastered: FreeDictionary.org
14. mastered: Mnemonic Dictionary
15. mastered: TheFreeDictionary.com

Business (2 matching dictionaries)

16. mastered: Legal dictionary
17. mastered: Financial dictionary

Computing (1 matching dictionary)

18. mastered: Encyclopedia

Medicine (1 matching dictionary)

19. mastered: Medical dictionary

Miscellaneous (1 matching dictionary)

20. mastered: Idioms

Slang (1 matching dictionary)

21. mastered: Urban Dictionary

(Note: See master as well.)

Definitions from WordNet (mastered) ▸ adjective:  understood perfectly Opposite: unlearned, unskilled, ignorant Types: algebra, geometry, trigonometry, calculus, statistics, probability, set theory, more... Phrases: have mastered, opposite of mastered, a person who has mastered many skills, more... Colors:     gold,     silver,     platinum,     black,     navy blue, more... ▸ Words similar to mastered ▸ Usage examples for mastered ▸ Idioms related to mastered ▸ Wikipedia articles (New!) ▸ Popular nouns described by mastered ▸ Words that often appear near mastered ▸ Rhymes of mastered ▸ Invented words related to mastered