OH

See also oh, óh, öh, and 애

English

Abbreviation

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.