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OH - What does it mean?

Definition of 'OH'

English

Abbreviation

(Abbreviation) (head)
  • (US) Ohio, a state of the United States of America.
  • (organic chemistry) Symbol for a hydroxyl, or alcohol, functional group.
  • (inorganic chemistry) Symbol for a hydroxide radical, or hydroxyl group.
  • (US|army|aviation) Prefix code for observation helicopter designations.
  • (Internet slang) Other half, i.e., husband, wife, partner, etc.