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
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.
That combined 929,000 feet of elevation change is equal to going from sea level to the top of Mount Everest and back roughly 16 times. Amber Harding Outkick, FOXNews.com, 2 Sep. 2026 Already, warm waters off the California coast are raising sea levels, and tides are currently 4 inches to 9 inches above the official forecast. Robert Gauthier, Los Angeles Times, 31 Aug. 2026 Around 78% of the glacier area, located between about 14,760 and 19,685 feet above sea level, is highly exposed to warming. CBS News, 28 Aug. 2026 One of these, Roughs Tower, sits 110 feet above sea level, off the coast of Suffolk in the North Sea. Encyclopedia Britannica, 27 Aug. 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

Browse Nearby Words

Cite this Entry

“Sea level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20level. Accessed 4 Sep. 2026.

Kids Definition

sea level

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

More from Merriam-Webster on sea level

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster