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 in DC Comics
- 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.
- Oriens Antiquus, a scientific journal.
- 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.
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