Medical Definition of saxitoxin
: a potent nonprotein neurotoxin C10H17N7O4·2HCl that originates especially in dinoflagellates (as of the genera Alexandrium, Gymnodinium, and Pyrodinium) found in red tides and causes paralytic shellfish poisoning when ingested in contaminated shellfish
Seen and Heard
What made you want to look up saxitoxin? Please tell us where you read or heard it (including the quote, if possible).