advanced developing country (or countries)
• Telecom. advice of duration and charge
• aerodrome control
• (Jamaica ) Agricultural Development Corporation
• aide-de-camp
• Aid to Dependent Children
• (USA ) Air Defense Command
• Chem. allyl diglycol carbonate
• Amateur Dramatic Club
• Computing analog-digital converter
• apparent diffusion coefficient
• Art Directors' Club
• Scouting Assistant District Commissioner
• Association of District Councils
• Computing automated distribution control
• automatic digital calculator