Edisonian UK /ˌɛdɪˈsəʊ.ni.ən/US /ˌɛdɪˈsoʊ.ni.ən/ adjective1 •Of or relating to the American inventor Thomas Edison.The Edisonian approach to innovation is characterized by trial-and-error discovery rather than a systematic theoretical approach. formsmore Edisonian · most Edisonian