Dictionary

red tide

noun

Definition of RED TIDE

:  seawater discolored by the presence of large numbers of dinoflagellates (especially of the genera Gonyaulax and Gymnodinium) which produce a toxin poisonous especially to many forms of marine vertebrate life and to humans who consume contaminated shellfish — compare saxitoxin

First Known Use of RED TIDE

1904

red tide

noun    (Medical Dictionary)

Medical Definition of RED TIDE

:  seawater discolored by the presence of large numbers of dinoflagellates especially of the genera Gonyaulax and Gymnodinium which produce a toxin poisonous especially to many forms of marine vertebrate life and to humans who consume contaminated shellfish—see paralytic shellfish poisoning; compare saxitoxin

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