Abbreviations that start with the letter: O (6,756 entries)

		O	Operations	Business » General
		O	Operator	Computing » Telecom
		O	Opportunities	Business » Positions
		O	Opportunity	Business » General
		O	Oprah	Community » Famous
		O	Optimism	Community
		O	Optional	Governmental » Military
		O	ordentlich	International » German
		O	Organization	Business » General
		O	Orgasm	Miscellaneous » Adults
		O	Orifice	Medical » Physiology
		O	Osten	International » German
		O	Osteoarthritis	Medical » Physiology
		O	Out	Community » Sports
		O	Outdoor	Community » Sports
		O	Outdoors	Regional
		O	Output	Computing » Software
		O	Output	Computing » Networking
		O	Output	Academic & Science » Electronics
		O	Outstanding	Governmental » Military
		O	Overclocking	Computing » General
		O	Overcooked	Miscellaneous » Food
		O	Overlay	Business » Positions
		O	Overt	Governmental » US Government
		O	Ownership	Business » Stock Exchange
		O	Oxygen	Academic & Science » Meteorology
		O	Realty Income Corporation	Business » NYSE Symbols
		O & P	Ova And Parasite	Medical » Physiology
		O PB	Realty Income Corporation Preferred B	Business » NYSE Symbols
		O PC	Realty Income Corporation Preferred C	Business » NYSE Symbols
		O#	Overton Number	Miscellaneous » Coins
BTW, Why won't you become an editor?