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
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Mount Everest Mount Everest is the highest mountain above sea level on Earth and one of the most iconic peaks in human history. Atharva Gosavi, Interesting Engineering, 8 June 2026 The private 50-acre nature preserve—perched nearly 2,000 feet above sea level—hosts no more than 20 guests at a time within its eight rooms. Christina Perrier, InStyle, 8 June 2026 At the point where the Artemis II crew reached peak velocity, the air was thinner and the temperature was colder than at sea level. Robert Pearlman, ArsTechnica, 8 June 2026 Towering 20,310 feet above sea level, Denali is considered one of the most challenging climbs in North America. Alexandra Koch, FOXNews.com, 6 June 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

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Cite this Entry

“Sea level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20level. Accessed 10 Jun. 2026.

Kids Definition

sea level

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

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