Advanced Optical Disc Aircraft Operations Division Audio on Demand aerosol optical depth Argon Oxygen Decarburization Argon-Oxygen Decarbonization Acousto-Optic Device Administrative Officer of the Day Administrator on Duty Alcohol and Other Drug Analog Output Differential Aortic dissection Army Ordnance Department arterial occlusive disease Assistant Operations Director Above Ordnance Datum Academy of Operative Dentistry accumulated oxygen deficit Acoustic-Optics Devices Act of Duty Actions on Decisions adult-onset diabetes Advance Ordnance Depot Advanced Optical Disk Advanced Ordnance Deport Advertising On Demand Aero Vodochody age of dam Age of Data Air Operations Directive