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 ascent is dramatic—a winding, six-mile climb brought us 2,700 feet above sea level. Kinsey Giddick, Travel + Leisure, 3 Aug. 2025 Some Pacific atolls sit just 1 to 2 meters above sea level and are slowly disappearing as waters rise. Daimeon Shanks-Dumont, The Conversation, 1 Aug. 2025 Advertisement In the event of a tsunami warning, people are advised to evacuate immediately and move to high ground and as far inland as possible (at least 100 ft above sea level or one mile inland), and follow the instructions of local authorities. Miranda Jeyaretnam, Time, 30 July 2025 During the day on Wednesday, the volcano sent ash plumes as high as about 1.9 miles (3 kilometers) above sea level, Russian news outlet Meduza reported, referencing state media reports. Nick Mordowanec barney Henderson john Feng, MSNBC Newsweek, 30 July 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 6 Aug. 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

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!