sargassum

noun

sar·​gas·​sum sär-ˈga-səm How to pronounce sargassum (audio)
: 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

Examples of sargassum in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Researchers at the University of South Florida used satellite imagery to determine monthly amounts of sargassum in the Atlantic Basin, and found that December had exceptional amounts of the seaweed. Bill Kearney, Sun Sentinel, 14 Jan. 2025 Another company plans to grow and sink enormous tracts of sargassum, a tropical seaweed. Bywarren Cornwall, science.org, 29 Aug. 2024 The waters surrounding the island also support coral reefs, sargassum and seaweed; endangered green sea turtles often visit to forage. Sarah Kuta, Smithsonian Magazine, 19 Dec. 2024 However, in popular tourist areas along the Yucatán coast like Cancun, Playa Del Carmen, Tulum, and others, the beach may become piled high with sargassum, a type of seaweed that can also make the water unswimmable. Emily Hochberg, Travel + Leisure, 18 Dec. 2024 See all Example Sentences for sargassum 

Word History

Etymology

borrowed from New Latin, borrowed from Portuguese sargaço sargasso

First Known Use

circa 1890, in the meaning defined above

Time Traveler
The first known use of sargassum was circa 1890

Dictionary Entries Near sargassum

Cite this Entry

“Sargassum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sargassum. Accessed 24 Jan. 2025.

Kids Definition

sargassum

noun
sar·​gas·​sum sär-ˈgas-əm How to pronounce sargassum (audio)
: any of a genus of brown algae that have a leafy branching body and air bladders and that often grow in free-floating masses in the ocean

More from Merriam-Webster on sargassum

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