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