Source : Webster's Revised Unabridged Dictionary (1913)

Automatically \Au`to*mat"ic*al*ly\, adv.
   In an automatic manner.

Source : WordNet®

automatically
     adv 1: in a reflex manner; "he answered automatically"
     2: in a mechanical manner; by a mechanism; "this door opens
        mechanically" [syn: {mechanically}]