OH

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See also: oh, óh, öh, он, өн, and

English[edit]

Abbreviation[edit]

OH

  1. (US) Ohio, a state of the United States of America.
  2. (organic chemistry) Symbol for a hydroxyl, or alcohol, functional group.
  3. (inorganic chemistry) Symbol for a hydroxide radical, or hydroxyl group.
  4. (US, army, aviation) Prefix code for observation helicopter designations.
  5. (Internet slang) Other Half, i.e. Husband, wife, partner etc.