Usually means: Expression of surprise, realization, acknowledgment.
Definitions Related words Phrases Mentions Lyrics History
We found 48 dictionaries that define the word Oh:

General (28 matching dictionaries)
  1. oh: Longman Dictionary of Contemporary English
  2. OH, oh: Merriam-Webster
  3. OH, OH, oh, oh, oh: Oxford Learner's Dictionaries
  4. OH, oh, oh: American Heritage Dictionary of the English Language
  5. oh: Collins English Dictionary
  6. OH: Vocabulary.com
  7. O'H, OH, Oh, Oh, Oh, oh, oH: Wordnik
  8. oh: Cambridge Advanced Learner's Dictionary
  9. OH, oh: Wiktionary
  10. oh: Webster's New World College Dictionary, 4th Ed.
  11. OH (O.), oh: The Wordsmyth English Dictionary-Thesaurus
  12. oh: Infoplease Dictionary
  13. OH: Dictionary.com
  14. oh: Online Etymology Dictionary
  15. oh: Cambridge Essential American English Dictionary
  16. OH-, OH (Ohio), OH (ohio), OH, Oh-, Oh (Ciara song), Oh (Korean surname), Oh (surname), Oh, The Oh: Wikipedia, the Free Encyclopedia
  17. Oh: Online Plain Text English Dictionary
  18. oh: Webster's Revised Unabridged, 1913 Edition
  19. Oh: Rhymezone
  20. Oh, oh: AllWords.com Multi-Lingual Dictionary
  21. oh: Webster's 1828 Dictionary
  22. OH, OH: Stammtisch Beau Fleuve Acronyms
  23. oh: FreeDictionary.org
  24. oh: Mnemonic Dictionary
  25. OH -, OH: TheFreeDictionary.com
  26. Oh: Wordnik

Art (1 matching dictionary)
  1. Glossary of Stamp Collecting Terms (No longer online)

Business (1 matching dictionary)
  1. OH: Financial dictionary

Computing (5 matching dictionaries)
  1. OH: Netlingo
  2. OH: CCI Computer
  3. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)
  4. CNET Internet Glossary (No longer online)
  5. OH -, OH, Oh-, Oh: Encyclopedia

Medicine (1 matching dictionary)
  1. OH -, OH, Oh-, Oh, o.h: Medical dictionary

Miscellaneous (4 matching dictionaries)
  1. Ka-BOOM! Comicbook Words on Historical Principles (No longer online)
  2. OH, OH: Acronym Finder
  3. AbbreviationZ (No longer online)
  4. United States Postal Service Official Abbreviations (No longer online)

Science (2 matching dictionaries)
  1. OH: Extragalactic Astronomy
  2. OH: A Dictionary of Quaternary Acronyms and Abbreviations

Slang (2 matching dictionaries)
  1. oh: Green’s Dictionary of Slang
  2. O.H, Oh, Oh, oh: Urban Dictionary

Tech (4 matching dictionaries)
  1. oh: Webster's New World Telecom Dictionary
  2. OH: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING
  3. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)
  4. National Weather Service Glossary (No longer online)

(Note: See ohing as well.)

Google, News, Images, Wikipedia, Reddit, BlueSky
Definitions from Wiktionary (OH)

▸ noun:  An utterance of oh; a spoken expression of surprise, acknowledgement, etc.
▸ verb:  (intransitive) To utter the interjection oh; to express surprise, etc.
▸ noun:  The name of the Latin-script letter O/o.
▸ noun:  the digit 0 (especially in representations of speech)
▸ noun:  A surname from Korean derived from a common Korean surname.
▸ noun:  A surname from Chinese.
▸ noun:  (US) Abbreviation of Ohio. [A state of the United States. Capital and largest city: Columbus.]
▸ noun:  (Internet slang) Initialism of other half: a husband, wife, partner, etc. [(idiomatic) A spouse.]
▸ noun:  (US, army, aviation) Initialism of observation helicopter.
▸ noun:  (Internet) Initialism of overheard; a post whose contents were overheard by its author.
▸ noun:  Initialism of office hours. [The times, typically from about 9am to 5pm, Monday to Friday, when non-24/7 office workers are at their desks.]

Similar:
Adam, ahh, Alex, also, Angela, Angie, anna, Annie, Ari, Arnie, more...

Opposite:
ah, wow, eh, um, shh

Types:
monatomic, diatomic, polyatomic, more...

Phrases:
uh oh, oh oh, oh oh, Oh Yeah, good oh, more...


▸ Word origin

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▸ Idioms related to Oh

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▸ Rhymes of Oh

▸ Invented words related to Oh

Similar:
Adam, ahh, Alex, also, Angela, Angie, anna, Annie, Ari, Arnie, more...

Opposite:
ah, wow, eh, um, shh

Types:
monatomic, diatomic, polyatomic, more...

Phrases:
uh oh, oh oh, oh oh, Oh Yeah, good oh, oh boy, oh dear, oh well, oh for, oh sadaharu, oh snap, right oh, Sadaharu Oh, big oh, c 16 h 33 oh, c 4 h 9 oh, c 6 h 5 oh, ch 3 chohch 2 oh, ch 3 oh, gamma oh, more...



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