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A potent neurotoxin, C11H17N3O8, found in many pufferfishes and certain other animals, including some salamanders and crabs.

[Shortening and alteration of New Latin Tetraodōn, pufferfish genus (Greek tetra-, tetra- + New Latin -odōn, -odon (so called because members of the genus have two upper and two lower teeth)) + toxin.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) a highly lethal neurotoxin found in certain puffer fish and in newts of the genus Taricha. Formula: C11H17N3O3
[C20: from New Latin Tetrodon (puffer fish genus name, from Greek tetra- fourfold + odont- tooth) + toxin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(tɛˌtroʊ dəˈtɒk sɪn)

a neurotoxin, C11H17N3O3, occurring in a species of puffer fish: ingestion may be fatal.
[1910–15; < New Latin Tetrodo(n) genus name of the puffer fish + toxin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tetrodotoxin - a powerful neurotoxin found in the ovaries of pufferfish
blowfish, puffer, pufferfish, sea squab - delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver
neurolysin, neurotoxin - any toxin that affects neural tissues
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Usually found on Japanese shores, it contains tetrodotoxin - the poison found in deadly puffer fish.
Fish-derived tetrodotoxin was initially focused on indication of opiate addiction withdrawal but is found to have an analgesic action as well.
This display serves as a warning to the predator that further attack will lead to ingestion of the potent neurotoxin, tetrodotoxin, which is present in the skin of the eft (Brodie, 1968).
Alma Saavedra, regional BFAR information officer, said puffer fish contains tetrodotoxin, a toxic substance that can kill humans if consumed.
On the other hand, cells can live, proliferate, and function happily in the presence of cyanide, anthrax or botulinum toxins, strychnine, tetrodotoxin (TTX), methylmercury or E605 (parathion) and VX (a dual component chemical weapon), i.e., some of the deadliest poisons known.
They were then taken to The Royal Hospital on Saturday evening.' She informed that the toxin in puffer fish is tetrodotoxin.
obscurus is popular in China and Southeast Asia, because of its umami taste, high nutritional value and do not contain tetrodotoxin in the meat and liver.
Barish told Green Area that all types of puffer fish, including the Lagocephalus spadiceus, contain the deadly tetrodotoxin compound.
Adults and probably chalimi of Caligus fugu (Yamaguti, 1936) infecting the toxic tetraodontid puffer are tolerant to its tetrodotoxin (TTX), and are able to accumulate it in their bodies, except for the ovaries and eggs (Ikeda et al.
It is also a major source of tetrodotoxin (a potential neurotoxin), predominantly in some Asian countries and recently in Europe, and its abundance in various fish species is widely increasing (29-31).
(19) He collected various powders provided by bokors and claimed that the principal compound causing the zombie state was tetrodotoxin, a potent frequently fatal neurotoxin found in puffer fish.
So far 197 species of pufferfish have been recorded in marine, brackish, and fresh water habitations of the tropical to sub-tropical regions, says Santhanam, and they are believed to be the second most poisonous vertebrates (after the golden poison frog) largely due to the tetrodotoxin and paralytic saxitoxin in their internal organs.