a mechanical figure or contrivance constructed to act as if by its own motive power; robot.
a person or animal that acts in a monotonous, routine manner, without active intelligence.
something capable of acting automatically or without an external motive force.
Origin of automaton
1605-15; < Latin: automatic device < Greek, noun use of neuter of autómatos spontaneous, acting without human agency, equivalent to auto-auto-1 + -matos, adj. derivative from base of memonénai to intend, ménos might, force
1610s, from Latin automaton (Suetonius), from Greek automaton, neuter of automatos "self-acting," from autos "self" (see auto-) + matos "thinking, animated, willing," from PIE *mn-to-, from root *men- "to think" (see mind (n.)).