infundibuliform UK /ˌɪn.fʌnˈdɪb.jʊ.lɪˌfɔː(ɹ)m/US /ˌɪn.fʌnˈdɪb.jə.lɪˌfɔɹm/ adjective1 •having the shape of a funnel or cone.This is a monopetalous, infundibuliform, white flower, of the tuberofe kind. — 1784 formsmore infundibuliform · most infundibuliform