We found 12 dictionaries that define the word onan:

General (5 matching dictionaries)

1. O'Nan, Onan, onan: Wordnik
2. Onan: Wiktionary
3. ONAN, Onan: Dictionary.com
4. Onan (film), Onan: Wikipedia, the Free Encyclopedia
5. Onan: Rhymezone

Computing (1 matching dictionary)

6. Onan: Encyclopedia

Medicine (2 matching dictionaries)

7. Onan: Merriam-Webster Medical Dictionary
8. Onan: Medical dictionary

Miscellaneous (1 matching dictionary)

9. ONAN: Acronym Finder

Religion (2 matching dictionaries)

10. Onan: Easton Bible
11. Onan: Smith's Bible Dictionary

Slang (1 matching dictionary)

12. O'Nan: Urban Dictionary

Definitions from Wiktionary (Onan) ▸ noun:  (biblical) The second son of Judah. ▸ noun:  (rare) A male given name from Hebrew. Similar: Ananias, Etan, OFer, Elkanah, Canaan, Kenan, Enos, Jonah, Nahum, Oren, more... ▸ Words similar to onan ▸ Usage examples for onan ▸ Idioms related to onan ▸ Wikipedia articles (New!) ▸ Popular adjectives describing onan ▸ Words that often appear near onan ▸ Rhymes of onan ▸ Invented words related to onan