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sea level

sea level

73 1.8
The average height of the sea surface used to measure land height and sea depth
  • noun
  • /si ˈlɛvəl/
translation icon : nivel del mar
  • What we know with certainty is that sea levels are going to continue to rise.
  • sea level rise
  • meters above sea level
  • feet above sea level

That is the sea level rising or lowering?

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Examples

  • As the glaciers melt, scientists are monitoring the rise in sea level around the world.

  • We're actually way below sea level right now.

  • So we are seeing sea levels rise.

  • We are building in about a foot of sea level rise.

  • So as you may have heard, sea levels are rising thanks to climate change.

  • The residents were some of the first victims of rising sea levels.

  • If we're going to have sea level rise, how do we cope with that?

  • So rising sea levels pose a clear and present threat.

  • So the result of all that is that sea level rise is now unstoppable.

  • We also face rising sea levels caused by the melting of Greenland's ice sheet.

Synonyms

MSL
vssea level
  • Specialized
1 4.5

The average level of the sea used to measure land and plane height

is the full term rather than an abbreviation
geoid
vssea level
  • Specialized
1 9.5

The shape of a planet that shows average sea level and helps measure heights

is the measured average ocean surface used for elevation not a modeled shape

How High

mountain
1.0
hill
1.0
elev
  • Specialized
8.4
sea level
73 1.8
lowland
4 3.2

Surface Forms

sea level singular
sea levels plural

Morphology

sea + level

The meaning 'the average height of the ocean's surface used as a reference' is directly and compositionally derived from 'sea' (ocean) + 'level' (height/altitude). This is a conventional, cross-linguistically common measurement term and follows a straightforward noun-noun composition that a B1 learner who knows both constituents can readily infer.

Etymology

Sea level comes from the idea of the flat surface of the sea being a common level to compare the height of land. So it became the standard 'height' we use to measure how high or low places and sea depths are.