We found 8 dictionaries that define the word tonic key:

General (7 matching dictionaries)

1. tonic key: Vocabulary.com
2. tonic key: Dictionary.com
3. Tonic key: Wikipedia, the Free Encyclopedia
4. tonic key: Rhymezone
5. tonic key: FreeDictionary.org
6. tonic key: Mnemonic Dictionary
7. tonic key: TheFreeDictionary.com

Computing (1 matching dictionary)

8. tonic key: Encyclopedia

Definitions from WordNet (tonic key) ▸ noun:  the basic key in which a piece of music is written ▸ Words similar to tonic key ▸ Usage examples for tonic key ▸ Idioms related to tonic key ▸ Wikipedia articles (New!) ▸ Words that often appear near tonic key ▸ Rhymes of tonic key ▸ Invented words related to tonic key