Source : Webster's Revised Unabridged Dictionary (1913)

Electronic \E`lec*tron"ic\, a. (Physics & Chem.)
   Of or pertaining to an electron or electrons.

Source : WordNet®

electronic
     adj 1: of or relating to electronics; concerned with or using
            devices that operate on principles governing the
            behavior of electrons; "electronic devices"
     2: of or concerned with electrons; "electronic energy"