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We found 19 dictionaries with English definitions that include the word xo:
Click on the first link on a line below to go directly to a page where "xo" is defined.

General (9 matching dictionaries)

1. XO: Merriam-Webster.com [home, info]
2. XO: Oxford Learner's Dictionaries [home, info]
3. XO: Collins English Dictionary [home, info]
4. XO, Xo, xo: Wordnik [home, info]
5. XO, xo: Wiktionary [home, info]
6. XO: Webster's New World College Dictionary, 4th Ed. [home, info]
7. XO: Dictionary.com [home, info]
8. XO (Elliott Smith album), XO (Leathermouth album), XO (Record Label), XO (disambiguation), XO (record label), XO (song), XO, Xo: Wikipedia, the Free Encyclopedia [home, info]
9. XO: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

10. Xo: Cooking Dictionary [home, info]

Business (1 matching dictionary)

11. XO: Travel Industry Dictionary [home, info]

Computing (1 matching dictionary)

12. XO (laptop): Encyclopedia [home, info]

Medicine (1 matching dictionary)

13. XO: Medical dictionary [home, info]

Miscellaneous (2 matching dictionaries)

14. XO: Acronym Finder [home, info]
15. XO: AbbreviationZ [home, info]

Slang (1 matching dictionary)

16. X.o: Urban Dictionary [home, info]

Tech (3 matching dictionaries)

17. XO: Webster's New World Telecom Dictionary [home, info]
18. XO: BBC Food Glossary [home, info]
19. XO: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info]

Quick definitions from Wiktionary (xo) ▸ noun:  Alternative form of xoxo (an abbreviation for hugs and kisses, usually placed at the end of a letter.) ▸ adjective:  Initialism of extra old; a grade of premium cognac, that has been aged in barrels for more than 6.5 years. ▸ noun:  (military, nautical) Initialism of executive officer. [(military) second in command of a military unit or ship] ▸ Words similar to xo ▸ Usage examples for xo ▸ Idioms related to xo (New!) ▸ Popular adjectives describing xo ▸ Popular nouns described by xo ▸ Words that often appear near xo ▸ Rhymes of xo ▸ Invented words related to xo