ci·gua·tox·in (sē'gwə-tŏk'sĭn) n. A potent neurotoxin that is secreted by a dinoflagellate and can accumulate in the flesh of certain marine fish, such as grouper or snapper, causing ciguatera poisoning.
Main Entry: ci·gua·tox·in Pronunciation: 'sE-gw&-"täk-s&n, 'sig-w&- Function: noun : a potent heat-stable neurotoxinthat is produced by a marine dinoflagellate (Gambierdiscus toxicus) and causes ciguatera poisoning in those who eat fish (as barracuda or amberjack) in which toxic levels of it have becomeconcentrated also: any of several related neurotoxins causing ciguatera
(sē'gwə-tŏk'sĭn) 