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

This winter is expected to be a window into California’s future of rising sea levels. — Hannah Fry, Los Angeles Times, 30 Oct. 2026

The Federal Aviation Administration imposed a temporary flight restriction covering a 15-nautical-mile radius around the facility, extending up to 10,000 feet above sea level, according to local media reports. — Neetika Walter, Interesting Engineering, 29 Oct. 2026

In short, as heat builds up in the eastern Pacific Ocean, surges of warm water are pushed up the coast — raising sea levels and further warming coastal temperatures. — Sean MacAday, Sacbee.com, 29 Oct. 2026

Marin County is in the planning stages of a multimillion-dollar project to raise and widen portions of the bike path, with the goal of reducing future flooding and protecting the route against rising sea levels. — CBS News, 28 Oct. 2026

Word History

First Known Use

1806, in the meaning defined above

Rhymes for sea level

• daredevil
• sublevel
• bevel
• devil
• multilevel

Kids Definition

sea level

noun

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