Having the form of a funnel; funnel-shaped.Specifically— In botany, having the form of a tube enlarging gradually upward and spreading widely at the summit: said of a gamopetalous corolla, as that of a morning-glory.In entomology, applied to joints of the antennæ, etc., when the basal part is cylindrical or nearly so, and the apical part gradually increases in diameter: distinguished from crateriform. Also infundibular, infundibulate.