Definition of "tetrodotoxin" []

• A potent neurotoxin, C11H17N3O3, found in many puffers and certain newts. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The chemical is called tetrodotoxin or TTX from the Fugu pufferfish."
• "A highly-toxic substance called tetrodotoxin is found in a breed of puffer fish native to Haitian waters."
• "Blowfish poison, called tetrodotoxin, is nearly 100 times more poisonous than potassium cyanide, according to the Ishikawa Health Service Association."