Medical Term:


Pronunciation: sak′si-tok′sin

Definition: A potent neurotoxin found in shellfish, such as the mussel or the clam (and sometimes the pufferfish, Sphoerides nephelus), produced by the dinoflagellate Gonyaulax catenella, which is ingested by the shellfish; the cause of cases of poisoning from eating the California sea mussel (Mytilus californianus), scallop, and the Alaskan butterclam (Saxidomus giganteus).