We found 13 dictionaries that define the word on request:

General (10 matching dictionaries)

1. on request: Merriam-Webster
2. on request: Collins English Dictionary
3. on request: Vocabulary.com
4. on request: Dictionary.com
5. on request: Rhymezone
6. on request: FreeDictionary.org
7. on request: Mnemonic Dictionary
8. on request: TheFreeDictionary.com

Business (2 matching dictionaries)

9. Travel Industry Dictionary (No longer online)
10. on request: Legal dictionary

Miscellaneous (1 matching dictionary)

11. on request: Idioms

Definitions from WordNet (on request) ▸ adverb:  on the occasion of a request Types: lcarte, concierge, valet, more... Phrases: Daddies on Request, Caesarean delivery on maternal request, more... ▸ Words similar to on request ▸ Usage examples for on request ▸ Idioms related to on request ▸ Wikipedia articles (New!) ▸ Words that often appear near on request ▸ Rhymes of on request ▸ Invented words related to on request