We found 11 dictionaries that define the word repunit:

General (5 matching dictionaries)

1. repunit: Collins English Dictionary
2. repunit: Wiktionary
3. REPUNIT: Dictionary.com
4. Repunit: Wikipedia, the Free Encyclopedia
5. repunit: The Phrontistery - A Dictionary of Obscure Words

Miscellaneous (1 matching dictionary)

6. REPUNIT: Acronym Finder

Science (3 matching dictionaries)

7. Repunit: Eric Weisstein's World of Mathematics
8. repunit: PlanetMath Encyclopedia
9. repunit, repunit: Prime

Slang (1 matching dictionary)

10. repunit: Urban Dictionary

Tech (1 matching dictionary)

11. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)

Definitions from Wiktionary (repunit) ▸ noun:  A repdigit consisting only of one or more occurrences of the digit 1. Similar: first, digit, unitate, oneth, radix, pentimal, cipher, aught, zero, three, more... Opposite: non-repunit, composite number, non-prime number ▸ Words similar to repunit ▸ Usage examples for repunit ▸ Idioms related to repunit ▸ Wikipedia articles (New!) ▸ Popular adjectives describing repunit ▸ Words that often appear near repunit ▸ Rhymes of repunit ▸ Invented words related to repunit