ciguatera Syllabification: (ci·gua·te·ra)Pronunciation: /ˌsēgwəˈterə/Definition of ciguatera noun poisoning by neurotoxins as a result of eating the flesh of a tropical marine fish that carries a toxic dinoflagellate. This is caused by Gambierdiscus toxicus, phylum Dinophyta Origin: mid 19th century: from American Spanish, from cigua 'sea snail'ciguatera in other Oxford dictionaries Definition of ciguatera in the British & World English dictionary