Red tide

noun

Definitions

Noun
  1. 1
    An algal bloom of sufficient quantity to cause discoloration (often red) in a body of water; red tides can potentially cause irritation or death to exposed creatures.
  2. 2
    seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin wordnet
  3. 3
    An algal bloom of sufficient quantity to cause discoloration (often red) in a body of water; red tides can potentially cause irritation or death to exposed creatures.; specifically, one caused by Karenia brevis.

Etymology

From red + tide.

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