methyl parathion

noun Chemistry.
a synthetic pesticide, C 8 H 1 0 NO 5 PS, used in the control of mites and various insects, as aphids, boll weevils, and cutworms.

1955–60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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However, exposure to methyl parathion may occur at farms where it has been used as a pesticide.
Methyl parathion is a white crystalline solid dissolved in a liquid solvent carrier.
The pesticide with the highest concentration in rain at both sites was methyl parathion.
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