Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An organophosphate compound, C10H19O6PS2, used as an insecticide.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Alteration (influenced by parathion) of earlier malathon : alteration of male(ate) + (me)th(yl) + –on (perhaps modeled on marathon).]

Examples

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