Source : WordNet®

DES
     n 1: a potent estrogen used in medicine and in feed for livestock
          and poultry [syn: {diethylstilbestrol}, {diethylstilboestrol},
           {stilbestrol}, {stilboestrol}]
     2: synthetic nonsteroid with the properties of estrogen;
        formerly used to treat menstrual problems but was found to
        be associated with vaginal cancers in the daughters of
        women so treated during pregnancy [syn: {diethylstilbesterol},
         {stilbesterol}]

Source : Free On-Line Dictionary of Computing

DES
     
        {Data Encryption Standard}