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.
This mountain lake sits 5,000 feet above sea level and is fed by glacial streams, giving it an iconic smooth surface and turquoise color. Meghan Palmer, Condé Nast Traveler, 11 Feb. 2026 As sea levels rise, a family on a remote island rescues a mysterious woman. Los Angeles Times, 11 Feb. 2026 This increases the risk of saltwater intrusion into the aquifer — a problem already intensified by rising sea levels. Ashley Miznazi, Miami Herald, 10 Feb. 2026 So, with sea level rise, the water is getting higher while the land is getting lower. John Ramos, CBS News, 10 Feb. 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 12 Feb. 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

Last Updated: - Updated example sentences
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