OH
OH is the postal abbreviation for the U.S. state of Ohio, and in business or online communication it often stands for on hold, on hand, or other half.
Medical
Occupational History
Orthopaedically Handicapped
Occutpational Hazards
Only Health
Orthopedically Handicapped
Obese Hypertensive
Occupational Health
Oral Hygiene
Orthostatic Hypotension
Osteopathic Hospital