We found 16 dictionaries that define the word on occasion:

General (13 matching dictionaries)

1. on occasion: Longman Dictionary of Contemporary English
2. on occasion: Merriam-Webster
3. on occasion: Oxford Learner's Dictionaries
4. on occasion: Collins English Dictionary
5. on occasion: Vocabulary.com
6. on occasion: Wordnik
7. on occasion: Cambridge Advanced Learner's Dictionary
8. on occasion: Wiktionary
9. On occasion, on occasion: Dictionary.com
10. on occasion: Rhymezone
11. on occasion: FreeDictionary.org
12. on occasion: Mnemonic Dictionary
13. on occasion: TheFreeDictionary.com

Business (1 matching dictionary)

14. on occasion: Legal dictionary

Medicine (1 matching dictionary)

15. on occasion: Medical dictionary

Miscellaneous (1 matching dictionary)

16. on occasion: Idioms

(Note: See on_occasions as well.)

Definitions from WordNet (on occasion) ▸ adverb:  now and then or here and there ("They visit New York on occasion") Opposite: frequently, regularly, often Phrases: on the occasion of, on a rare occasion, on the occasion, on one occasion only, more... ▸ Words similar to on occasion ▸ Usage examples for on occasion ▸ Idioms related to on occasion ▸ Wikipedia articles (New!) ▸ Words that often appear near on occasion ▸ Rhymes of on occasion ▸ Invented words related to on occasion