Abbreviations that start with the letters: OH (223 entries)

		OH	Hyroxide ion	Academic & Science » Chemistry
		OH	Oak Hill	Governmental » State & Local
		OH	Oakwood Homes Corporation	Business » NYSE Symbols
		OH	Observation Helicopter	Governmental » Transportation
		OH	Occupational history	Medical » Physiology
		OH	Off Hook	Computing » Telecom
		OH	Office Hour	Miscellaneous » Unit Measures
		OH	Ohio	Regional » States
		OH	Old Hickory	Community » Famous
		OH	On Hand	Business » General
		OH	Oracle Help	Computing » Databases
		OH	Oracle Home	Computing » Databases
		OH	Oral History	Governmental » Military
		OH	Organized Home	Community » Housing
		OH	Original Hostage	Governmental » US Government
		OH	Other Half	Internet » Chat
		OH	Over Heat	Governmental » Transportation
		OH	Overall Height	Governmental » Transportation
		OH	Overhaul	Governmental » NASA
		OH	Overhead	Governmental » NASA
		OH	Oxygen And Hydrogen	Academic & Science » Chemistry
		OH	Ozone House	Community » Non-Profit Organizations
		OH87	Providence Hospital Heliport, Sandusky, Ohio USA	Regional » Airport Codes
		OHA	A Office Of Hawaii's Association	Community » Professional Organizations
		OHA	A Office Of Hawaiis Association	Community » Professional Organizations
New:  We also know Zip Codes FYI!