a highly poisonous compound, CHONPS, commercially a colorless to dark-brown liquid, used as an agricultural insecticide
Origin of parathionpara- + thion(ic)
A poisonous yellowish liquid organophosphate compound, C10H14NO5PS, used as an insecticide. Its use in the United States is highly restricted.
Origin of parathionpara- 1 thio(phosphate) phosphoric acid salt ( thio- ) ( phosphate ) -on 3
- O,O-Diethyl-O-4-nitro-phenylthiophosphate, a powerful, dangerously toxic insecticide.