the.com/neurotoxicity

means Neurotoxicity is the capacity of a substance to damage or destroy nerve cells and disrupt the nervous system's normal function.

from Built from Greek 'neuron' (sinew, nerve) and 'toxikon,' which originally meant the poison smeared on arrows — from 'toxon,' a bow. So the word carries, buried in it, the image of an archer's poison: toxicity has meant 'arrow-poison-ness' since before anyone knew what a nerve cell was. 'Neuro-' got bolted on as neuroscience formalized in the 20th century, giving the old poison-word a precise new target.