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Meaning of mean sea level
The average level of the sea's surface, used as a standard reference for measuring heights and depths.
Etymology of mean sea level
The term 'mean sea level' originated from the concept of measuring the average level of the sea's surface, which dates back to the 19th century.
The word 'mean' comes from the Old English word 'mēan', which is derived from the Proto-Germanic word 'mēniz', and is related to the Proto-Indo-European root 'men-'.
The phrase 'sea level' has been used since the 17th century to describe the level of the sea's surface.
Synonyms
average sea level
sea level
normal sea level
standard sea level
base level
reference level
datum level
zero level
elevation datum
geoid level
vertical datum
height datum
sea surface level
ocean level
tide level
water level
flood level
low tide level
high tide level
mean high water
mean low water
mean tide level
normal tide level
standard tide level
average tide level
Definitions
- The level of the sea's surface, halfway between high and low tide, used as a standard reference for measuring heights and depths.
- * A datum level used for measuring the height of land and the depth of bodies of water.
Usage Examples
- The new building's foundation was designed to be above mean sea level to protect it from flooding.
- * The hikers used a map that showed the elevation of the mountain peaks above mean sea level.
- * The coastal city's mean sea level has risen significantly over the past century due to climate change.
Antonyms
high water
low water
flood level
high tide
low tide
maximum level
minimum level
peak level
trough level
extreme level
abnormal level
unusual level
extraordinary level
elevated level
depressed level
below normal level
above normal level
extreme elevation
extreme depth