What does OM stand for?

What does OM mean?

OM	Orange Monkey Medical » Veterinary
OM	Orange Moss Miscellaneous » Food
OM	Orchestral Model Community » Music
OM	Orden Ministerial International » Spanish
OM	Order Management Business » Products
OM	Order of Magnitude Academic & Science » Mathematics
OM	Order of Merit Governmental » Military
OM	Order of Merit Miscellaneous » Awards & Medals
OM	Ordinanza Ministeriale International » Italian
OM	Organic Material Miscellaneous » Unclassified
OM	Organic Matter Academic & Science » Chemistry
OM	Organic Merchants Business » Firms
OM	Organizational Management Business » General
OM	Organizational Manager Business » Positions
OM	Original Metal Miscellaneous » Unclassified
OM	Osteopathic Manipulation Medical » Physiology
OM	Other Male Community » Law
OM	Other Mother Miscellaneous » Names and Nicknames
OM	Otitis Media Medical » Physiology
OM	Out of Many Academic & Science » Mathematics
OM	Out of Memory Computing » General
OM	Outer Marker Governmental » Transportation
OM	Outer Marker Governmental » NASA
OM	Outer Membrane Medical » Laboratory
OM	Outer Mitochondrial Medical » Laboratory