sea level
/ˈsiː ˌlɛvəl/
noun
- The average height of the surface of the ocean, used as a standard for measuring elevation on land.
- The mountain's height is given as 8,848 meters above sea-level.
- Scientists measure changes in sea-level to track global warming.
- The city is only a few meters above sea-level.
adjective
- At or relating to the average height of the ocean's surface.
- Sea-level pressure is an important factor in weather forecasting.
- The sea-level canal connects two oceans at the same elevation.
- Coastal towns are concerned about sea-level rise.