diosgenin
Concise Oxford English Dictionary © 2008 Oxford University Press:
diosgenin /dʌɪˈɒsdʒənɪn/
▶noun Chemistry a steroid compound obtained from Mexican yams and used in the synthesis of steroid hormones.
– origin 1930s: from dios- (from the mod. L. genus name Dioscorea) + genin, denoting steroids that occur as the non-sugar part of certain glycosides.
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