Eddingtonian UK /ˌɛdɪŋˈtəʊ.ni.ən/US /ˌɛdɪŋˈtoʊ.ni.ən/ adjective1 •Of or relating to Arthur Eddington (1882–1944), English astronomer, physicist, and mathematician. formsmore Eddingtonian · most Eddingtonian