Definition of brown tide
: a large area of seawater discolored a usually murky brown by the presence of large numbers of single-celled algae (such as Aureococcus anophagefferens or Aureoumbra lagunensis) ◆Brown tides are not known to be harmful to people or marine vertebrates but have been detrimental to eelgrass beds and the shellfish that spawn there. A brown tide, like the kind blamed for the collapse of the Long Island scallop industry in the 1980s, has bloomed in such high concentrations that it has turned one waterway black. — Anita Huslin, Wall Street Journal, 10 Aug. 2003 — compare red tide
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of brown tide
Seen and Heard
What made you want to look up brown tide? Please tell us where you read or heard it (including the quote, if possible).