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sea level
This term serves as a global geodetic datum, providing a consistent baseline for calculating the elevation of landmasses. It is primarily used in geography, cartography, and aviation to ensure that altitude measurements are standardized across different regions.
Grammatically, the term is treated as an uncountable noun because it refers to a conceptual average or a specific reference plane rather than a discrete object. Consequently, it does not have a plural form and is typically used with the definite article "the" when referring to the global standard.
Meanings
Examples
The coastal town is barely two meters above sea level.
Global warming is causing a steady rise in sea level.
I wonder how much the sea level has risen since the last century.
The aircraft is currently cruising at ten thousand feet above sea level.
We need to build a sea wall to protect the city from rising sea levels.
Is this plateau actually above sea level or just a high tide area?
Rising sea levels threaten to submerge several small island nations.