lagoon

noun

la·​goon lə-ˈgün How to pronounce lagoon (audio)
1
: a shallow sound, channel, or pond near or communicating with a larger body of water
2
: a shallow artificial pool or pond (as for the processing of sewage or storage of a liquid)
lagoonal adjective

Examples of lagoon 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.
Indeed, a yacht trip around the island reveals only a handful of other boats, turning cerulean lagoons into private swimming pools. Lee Cobaj, Robb Report, 1 May 2025 Sea Grant Extension Agent Carolyn Kovacs will discuss the species and ecology of seagrass in the Indian River Lagoon, as well as the lagoon’s Eyes on Seagrass Blitz and how you can get involved. Joe Rassel, The Orlando Sentinel, 30 Apr. 2025 Stromatolites continue to survive today in hypersaline lagoons and isolated lakes across Western Australia, offering a rare glimpse into the mechanisms that once built and breathed life into our world. Scott Travers, Forbes.com, 28 Apr. 2025 Restoration of native plants in the lagoon helps to promote more biodiversity, store more carbon, and significantly reduce wildfire risk. Jeff Regan, San Diego Union-Tribune, 24 Apr. 2025 See All Example Sentences for lagoon

Word History

Etymology

French & Italian; French lagune, from Italian laguna, from Latin lacuna pit, pool, from lacus lake

First Known Use

1673, in the meaning defined at sense 1

Time Traveler
The first known use of lagoon was in 1673

Browse Nearby Words

Cite this Entry

“Lagoon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lagoon. Accessed 13 May. 2025.

Kids Definition

lagoon

noun
la·​goon lə-ˈgün How to pronounce lagoon (audio)
: a shallow channel or pond near or connected with a larger body of water

More from Merriam-Webster on lagoon

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