NCIt definition : A synthetic organic thiophosphate compound and organophosphate acetylcholinesterase
inhibitor and neurotoxin that is used as a pesticide. It is characterized as a volatile
colorless or off-white crystalline solid with a pungent odor, and exposure occurs
by inhalation, ingestion, or contact.;
Alternative definition : CDISC: The organophosphorus agent methamidophos.;