We found 13 dictionaries that define the word -onym:

General (11 matching dictionaries)

1. -onym: Merriam-Webster
2. -onym: Oxford Learner's Dictionaries
3. -onym, -onym: Collins English Dictionary
4. -onym: Wiktionary
5. -onym: Webster's New World College Dictionary, 4th Ed.
6. -onym: The Wordsmyth English Dictionary-Thesaurus
7. -onym: Infoplease Dictionary
8. -onym: Dictionary.com
9. -onym: Wikipedia, the Free Encyclopedia
10. -onym: MyWord.info
11. -onym: Merriam-Webster

Art (1 matching dictionary)

12. -onym: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

13. -onym: Encyclopedia

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