NCIt definition : A synthetic phosphorous compound and cholinesterase inhibitor that is strictly used
as a topical pediculicide. Malathion exerts its action on the nervous system of the
lice by irreversibly inhibiting the activity of cholinesterase, thereby allowing acetylcholine
to accumulate at cholinergic synapses and enhancing cholinergic receptor stimulation.
This eventually leads to the head lice's death.;
Alternative definition : CDISC: The organophosphorus agent malathion.;