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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.
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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.
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Alex Harris, Miami Herald, 31 Jan. 2025
The estuary also helps prevent coastal erosion and absorb the effects of sea level rise.
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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.
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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 12 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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