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.
The air pressure in the cabins of commercial planes is relatively low, comparable to that of an altitude of roughly 2,000 meters above sea level. Korin Miller, SELF, 30 Dec. 2025 The earthquake's epicenter was located roughly 12 miles west-northwest of Sunnyside-Tahoe City and occurred above sea level. Ca Earthquake Bot, Sacbee.com, 30 Dec. 2025 In 2018, Microsoft deployed a submarine-like data center 117 feet below sea level to take advantage of the cooling benefits of seawater and tidal power to enable the project to be powered fully by renewable energy. April Roach, CNBC, 29 Dec. 2025 The ski area base is at 9,000 feet above sea level, and the mountain tops out at 12,060 feet, offering an impressive 3,060 feet of vertical rise. Evie Carrick, Travel + Leisure, 29 Dec. 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

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Cite this Entry

“Sea level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20level. Accessed 31 Dec. 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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