from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Either of two pale-yellow, highly toxic organophosphorous liquids, C6H15O3PS2 or C6H15O4PS2, used as systemic insecticides.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An organophosphate insecticide, 1-(2-diethoxyphosphorylsulfanylethylsulfanyl)ethane.
d(i)-1 + e(thyl) + me(rcaptan) + t(hi)on(ate), salt or ester of a thionic acid (thion- + -ate2).(American Heritage® Dictionary of the English Language, Fourth Edition)