Vx

vertex

* * *

VX 'vē-'eks n a cholinesterase inhibitor C₁₁H₂₆NO₂PS prepared and stockpiled for use in chemical warfare as a nerve gas

* * *

an organophosphorus compound that is a potent cholinesterase inhibitor and is used as a nerve gas; symptoms of poisoning include bronchial constriction, convulsions, and often death. See organophosphorus compound poisoning, under poisoning.