sea level

noun

: the level of the surface of the sea especially at its mean position midway between mean high and low water compare ground level sense 1a

Examples of sea level in a Sentence

Recent Examples on the Web
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Signs that describe rising sea levels and climate change in Louisiana were flagged. Madison Dapcevich, Outside, 11 Mar. 2026 The earthquake struck above sea level, with its epicenter about 32 miles east of Big Pine. Ca Earthquake Bot, Sacbee.com, 11 Mar. 2026 Hawaii time, with a plume eventually reaching as high as 25,000 feet above sea level. Marc Ramirez, USA Today, 10 Mar. 2026 That’s one reason opponents argue the project could unsettle contaminated sediment and amplify flooding as sea levels rise—changes that, in their view, could worsen the region’s substantial PFAS problem. Patrick Sisson, Scientific American, 9 Mar. 2026 See All Example Sentences for sea level

Word History

First Known Use

1806, in the meaning defined above

Time Traveler
The first known use of sea level was in 1806

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Cite this Entry

“Sea level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20level. Accessed 12 Mar. 2026.

Kids Definition

sea level

noun
: the height of the surface of the sea midway between the average high and low tides

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