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 would have catastrophic global consequences, pushing parts of the world into a deep freeze, heating up others, disrupting monsoon seasons and raising sea levels. Laura Paddison, CNN Money, 13 Oct. 2025 This includes supporting abundant fisheries and providing vital coastal protection from storm surges and rising sea levels for communities living behind them and their assets. Doyle Rice, USA Today, 13 Oct. 2025 The widespread collapse of reef ecosystems would be devastating for marine and human life— reefs help support fisheries, and protect coastlines from storm surges and rising sea levels. Simmone Shah, Time, 12 Oct. 2025 Breathing is hard at 6,000 feet above sea level. Simon Bland, IndieWire, 8 Oct. 2025 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 17 Oct. 2025.

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

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