ciguateraPronunciation: /ˌsɪgwəˈtɛːrə/Definition of ciguatera noun [mass noun] poisoning by neurotoxins as a result of eating the flesh of tropical marine fish that carries a toxic dinoflagellate. This is caused by Gambierdiscus toxicus, division (or phylum) Dinophyta Origin: mid 19th century: from American Spanish, from cigua 'sea snail'ciguatera in other Oxford dictionaries Definition of ciguatera in the US English dictionary