pufferfish toxin

noun

1. A powerful neurotoxin present in certain pufferfish, especially in their liver, ovaries, and skin. It is also called tetrodotoxin and is extremely poisonous to humans; there is no known antidote.

   B2

   uncountable

   • "Eating just a small amount of pufferfish toxin can kill a person."B1
   • "Only specially trained chefs are allowed to prepare pufferfish because the pufferfish toxin is so dangerous."B2
   • "The researcher identified the pufferfish toxin as tetrodotoxin, a sodium channel blocker."C1