WordNet (r) 3.0 (2006):

automation
    n 1: the act of implementing the control of equipment with
         advanced technology; usually involving electronic hardware;
         "automation replaces human workers by machines" [syn:
         automation, mechanization, mechanisation]
    2: the condition of being automatically operated or controlled;
       "automation increases productivity"
    3: equipment used to achieve automatic control or operation;
       "this factory floor is a showcase for automation and robotic
       equipment"

The Free On-line Dictionary of Computing (30 December 2018):

automation

    Control of processes, equipment or systems
   by computer (or simpler electronics), typically replacing
   human control.  Often used for control of a manufacturing
   process where the term may or may not imply the use of some
   kind of general purpose robot.

   See also design automation, office automation,
   manularity, Manufacturing Automation Protocol, PEARL,
   QBE.

   (1994-10-21)