The meaning of the Acronym OH is...

OH is

• Off Hook

More Meanings For OH:

• Oracle Help
• Oracle Home
• Off Hook
• Other Half
• Oxygen And Hydrogen
• Hyroxide ion
• OverHauled
• Office Hour
• The Order Of H
• Olduvai Hominid
• Open House
• Orthopaedically Handicapped
• Open Hearts
• Our Hero
• Original Hamster

OH is also in:

• Aircraft
• Chat
• Chemistry
• Databases
• Telecom
• Unfiled
• Unit Measures