medical Definition of peltatin
:either of two lactones that occur as glycosides in the rootstock of the mayapple (Podophyllum peltatum) and have some antineoplastic activity:
b
or
β-peltatin
\ˈbāt-ə-, chiefly British ˈbēt-ə-\
:one C22H22O8 containing only one hydroxyl group with the other replaced by a methoxyl group
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