peltatin

pel·ta·tin

noun \pel-ˈtāt-^ən\

Definition of PELTATIN

: either of two lactones that occur as glycosides in the rootstock of the mayapple (Podophyllum peltatum) and have some antineoplastic activity: a or α–pel·ta·tin \ˈal-fə-\ : one C₂₁H₂₀O₈ containing two hydroxyl groups b or β–pel·ta·tin \ˈbāt-ə-, chiefly British ˈbēt-ə-\ : one C₂₂H₂₂O₈ containing only one hydroxyl group with the other replaced by a methoxyl group