ro·te·none 
(rōtn-ōn′)
(rōtn-ōn′)n.
A very toxic white crystalline compound, C23H22O6, extracted from the roots of various plants, especially those of the genera Derris, Paraderris, and Lonchocarpus in the pea family, and used as an insecticide.
[Japanese rōten, plant of the genus Derris from which rotenone was isolated + -ONE.]