Source : WordNet®

Ag
     n : a soft white precious univalent metallic element having the
         highest electrical and thermal conductivity of any metal;
         occurs in argentite and in free form; used in coins and
         jewelry and tableware and photography [syn: {silver}, {atomic
         number 47}]

Source : Free On-Line Dictionary of Computing

ag
     
         The {country code} for Antigua and Barbuda.
     
        (1999-01-27)