Definition of tetrodotoxin in English:


Syllabification: te·tro·do·tox·in
Pronunciation: /teˌtrōdəˈtäksin


  • A poisonous compound present in the ovaries of certain pufferfishes. It is a powerful neurotoxin.
    More example sentences
    • Some gobies even rely on chemical protection, producing a poison called tetrodotoxin, which also occurs in pufferfishes and species of salamander.
    • The poison in fugu is neurotoxin tetrodotoxin and although it is not always fatal, it can cause an unpleasant death.
    • The liver and reproductive organs of the puffer fish contain tetrodotoxin, an extremely powerful nerve poison.


early 20th century: from modern Latin Tetrodon (former genus name, from Greek tetra- 'fourfold' + odous, odont- 'tooth') + toxin.

More definitions of tetrodotoxin

Definition of tetrodotoxin in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day skosh
Pronunciation: skōSH
a small amount; a little