: any of various submerged monocotyledonous plants (such as eelgrass, tape grass, and turtle grass) of tropical to temperate usually shallow coastal waters that have narrow grasslike leaves and often form dense underwater meadows

Examples of seagrass in a Sentence

Recent Examples on the Web
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Sandy offshore islands and expansive seagrass beds make the Gulf an ideal habitat for nesting and breeding. — Paula Hancocks, CNN Money, 23 Oct. 2026 One crab can eat more than 40 juvenile soft-shell clams in a day, while also destroying seagrass habitats. — Victoria Malloy, Time, 21 Oct. 2026 Within the bounds of the park, travelers will find mangrove islands, white sand beaches, turquoise waters, and lush seagrass beds offshore. — Kristin Granero, Travel + Leisure, 9 Oct. 2026 One image shows an intact amphora nestled among thick seagrass on the seafloor — while another shows a police diver examining a large, heavily encrusted vessel. — Andrea Margolis, FOXNews.com, 3 Oct. 2026 See All Example Sentences for seagrass

Word History

First Known Use

1578, in the meaning defined above

Time Traveler
The first known use of seagrass was in 1578

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Cite this Entry

“Seagrass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seagrass. Accessed 28 Oct. 2026.

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