sargassum

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noun sar·gas·sum \sär-ˈga-səm\

Definition of sargassum

  1. :  any of a genus (Sargassum) of brown algae that have a branching thallus with lateral outgrowths differentiated as leafy segments, air bladders, or spore-bearing structures :  gulfweed

Origin and Etymology of sargassum

New Latin, genus name, from International Scientific Vocabulary sargasso


First Known Use: circa 1890


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