| ̷ ̷(ˌ) ̷ ̷ˌ- noun
( -s )
Etymology: anti- (I) + cholinesterase
: a substance that inhibits a cholinesterase by combination with it: as
a. : a drug (as physostigmine or neostigmine) useful as a cholinergic stimulant whose effect on a cholinesterase is reversible
b. : a nerve poison ; especially : an organic phosphate derivative (as tetraethyl pyrophosphate or parathion) useful as an insecticide whose effect on a cholinesterase is irreversible or only partially reversible