Ericksonian UK /ˌɛɹɪkˈsəʊ.ni.ən/US /ˌɛɹɪkˈsoʊ.ni.ən/ adjective1 •Of or pertaining to Milton Hyland Erickson (1901–1980), American psychiatrist specializing in medical hypnosis and family therapy. formsmore Ericksonian · most Ericksonian