ABM - ANTI BALLISTIC MISSILE AC - ALTERNATE CURRENT / ASHOK CHAKRA / AIR CONDITIONER / ANTARCTIC CLUB AD - ANNO DOMINI ( AFTER THE BIRTH OF JESUS ) ADA - AERONAUTICAL DEVELOPMENT AGENCY ADB - ASIAN DEVELOPMENT BANK AEC - ATOMIC ENERGY COMMISSION AIDS - ACQUIRED IMMUNE DEFICIENCY SYNDROME AIIMS - ALL INDIA INSTITUE OF MEDICAL SCIENCE AIR - ALL INDIA RADIO AM- ANTI MERIDIAN APEC - ASIA PACIFIC ECONOMIC COOPERATION APPLE - ARAINE PASSANGER PAYLOAD EXPERIMENT ASEAN - ASSOCIATION OF SOUTH EAST ASIAN NATIONS ASLV- AUGMENTED SATELLITELAUNCH­ VEHICLE ASI ARCHAEOLOGICAL SURVEYOF INDIA ATM - AUTOMATED TELLER MACHINE ATS - ANTI TETANUS SERUM