ˌtrīəˈdēnəm noun
Usage: capitalized
Etymology: New Latin, from tri- + Greek adēn gland — more at aden-
in some classifications : a genus of No. American herbs (family Guttiferae) comprising two forms usually included in the genus Hypericum but distinguished when separated chiefly by the pink or purple flowers and the three large glands alternating with three sets of stamens