OA

From Wikipedia, the free encyclopedia

OA, Oa, or oa can mean:

• o/a (also o.a. or oa), an abbreviation for overall, used when describing the length of a ship.
• Oa, a digraph
• Oa, a fictional planet
• Obavještajna agencija, the Croatian Intelligence Agency.
• Oficina Anticorrupción, an Argentine law enforcement agency.
• Old Alleynian, Old boy of Dulwich College.
• Olympic Airlines, the IATA code.
• Onder Andere, is abbreviated to o.a. in the Dutch language; it means amongst others.
• Open access, the free online availability of digital content.
• Operational amplifier in electronics
• Order of Appearance, a less-used synonym for Order of Battle
• Order of the Arrow, the honor society of the Boy Scouts of America.
• Order of Australia, an Australian formal honour
• Original Advocacy, in the National Forensics League.
• Orion's Arm, a collaborative, hard sci-fi world-building project.
• Osteoarthritis, A degenerative disease of joints.
• Overeaters Anonymous, for compulsive overeaters.