neurotoxin

1. (neuroscience, toxicology, pharmacology) A toxin that specifically acts upon neurons, their synapses, or the nervous system in its entirety.Examples: "There were stretches of days when the lakes were closed because of the algae. It sometimes secreted neurotoxins that could be fatal."; "Among those who think of fugu as merely a distant delicacy, knowledge rarely goes beyond the fish’s infamous trait: In the most delicious species, the innards are suffused with the neurotoxin called tetrodotoxin (TTX)."Synonyms: neurolysin