automatist1
/ɔːˈtɒmətɪst/noun
A maker of automata.
Origin
Mid 19th century; earliest use found in Frederic Wraxall (1828–1865), writer. From automat- + -ist, after French automatiste.
automatist2
/ɔːˈtɒmətɪst/noun
1Chiefly Spiritualism. A person engaged in or subject to automatism; specifically a medium who produces automatic writing.
2An artist, writer, etc., whose technique is based upon automatism.
3An adherent of the theory or doctrine of automatism; a person who believes organisms are motivated by mechanical and physical causes rather than consciousness or will. Now chiefly historical.
adjective
Of, relating to, or using automatism.
Origin
Mid 19th century. From automat- + -ist, after automatism.