sigillarian UK /ˌsɪd͡ʒɪˈlɛəɹi.ən/US /ˌsɪd͡ʒəˈlɛɹi.ən/adjective 1noun 1forms 3 adjective1 •Resembling or relating to that genus. noun1 •A member of the Sigillaria, a genus of extinct trees. formssigillarians · more sigillarian · most sigillarian
