We found 8 dictionaries that define the word on-key:

General (7 matching dictionaries)

1. on-key: Vocabulary.com
2. on-key: Wordnik
3. on-key: Dictionary.com
4. on-key: Rhymezone
5. on-key: FreeDictionary.org
6. on-key: Mnemonic Dictionary
7. on-key: TheFreeDictionary.com

Computing (1 matching dictionary)

8. on-key: Encyclopedia

Definitions from WordNet (on-key) ▸ adjective:  in tune; accurate in pitch ▸ Words similar to on-key ▸ Usage examples for on-key ▸ Idioms related to on-key ▸ Wikipedia articles (New!) ▸ Popular nouns described by on-key ▸ Words that often appear near on-key ▸ Rhymes of on-key ▸ Invented words related to on-key