seagrass

noun

sea·​grass ˈsē-ˌgras How to pronounce seagrass (audio)
: 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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The bay and its once verdant seagrass meadows were ideal territory for the plant-eating green turtles. Jenny Staletovich, Miami Herald, 2 May 2026 As a result, the wide, shallow bay, with its lacework of shoals and basins, grows hot and hypersaline, killing seagrass, fueling algae blooms and hurting the economy of the Keys. Bill Kearney, Sun Sentinel, 29 Apr. 2026 Snorkeling is popular at the ends of the beach, where visitors can swim among fish darting between rocky outcrops and seagrass beds. Jessica Chapel, Condé Nast Traveler, 29 Apr. 2026 As in the rest of the lagoon system, years of nutrient pollution and recurring algal blooms had diminished seagrass cover to nearly zero by the early 2020s. Hannah V. Herrero, The Conversation, 21 Apr. 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 7 May. 2026.

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