picrotoxininn.
/ˌpɪkrəʊˈtɒksᵻnɪn/, U.S. /ˌpɪkroʊˈtɑks(ə)nən/ Chemistry.
A bitter, crystalline, sesquiterpene lactone, C15H16O6, that is the toxic component of picrotoxin.
ΚΠ
1890 J. S. Billings National Med. Dict. II. 338/1 Picrotoxinin, according to Barth and Kretschy, one of the constituent principles of picrotoxin.
1918 Jrnl. Amer. Chem. Soc. 40 1937 It is also perhaps interesting to note the natural occurrence of a series of lactones, corresponding to..the various terpene series. Sesquiterpenes, C15H24... C15H18O3 Santonin... C15H16O6 Picrotoxinin.
1952 Jrnl. Amer. Chem. Soc. 74 3046 The unique relationship of picrotoxinin to the steroid family is pointed out.
2000 Proc. National Acad. Sci. U.S.A. 97 4417/3 The prototypic GABA channel blocker picrotoxinin is isolated from plants of the moonseed family.
This is a new entry (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1890