[ sak-si-tok-sin ]
/ ˌsæk sɪˈtɒk sɪn /


a powerful neurotoxin, C10H17N7O4, produced by the dinoflagellate Gonyaulax catenella, the causative agent of red tide.

Origin of saxitoxin

1960–65; < New Latin Saxi(domus), a clam genus infected by the dinoflagellates (equivalent to Latin sax(um) stone + -i- -i- + domus house) + toxin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for saxitoxin


[ săk′sĭ-tŏksĭn ]


A potent neurotoxin produced by certain dinoflagellates that accumulates in shellfish feeding on these organisms and consequently causes food poisoning in humans who eat the shellfish.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.