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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
Federal Aviation Administration charts show – and the NTSB confirmed – helicopters in the corridor must be at or below 200 feet above sea level.
—Kaanita Iyer, CNN, 2 Feb. 2025
The city is building its new roads to withstand 27 more inches of sea level rise by 2070, or NOAA’s intermediate-high sea level rise projection.
—Alex Harris, Miami Herald, 31 Jan. 2025
The estuary also helps prevent coastal erosion and absorb the effects of sea level rise.
—Clara Harter, Los Angeles Times, 29 Jan. 2025
Cities such as Palo Alto and Milpitas, which have a closer proximity to the San Francisco Bay than others, were ranked higher for risk of climate change impacts than their more inland counterparts as sea levels continue to rise.
—Grace Hase, The Mercury News, 24 Jan. 2025
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Word History
First Known Use
1806, in the meaning defined above
Dictionary Entries Near sea level
Cite this Entry
“Sea level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20level. Accessed 8 Feb. 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
Nglish: Translation of sea level for Spanish Speakers
Britannica.com: Encyclopedia article about sea level
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