SAXITOXIN

noun Etymology: saxi- (from New Latin Saxidomus giganteus, species of butter clam from which it is isolated) + toxin Date: 1962 a potent nonprotein neurotoxin C 10 H 17 N 7 O 4 2HCl that originates especially in dinoflagellates (genus Gonyaulax ) found in red tides and that sometimes occurs in and renders toxic normally edible mollusks which feed on them