sea-level

Altitude's starting point

Sea-level functions as an adjective describing something at or relative to the average height of the ocean's surface: sea-level rise, sea-level pressure.

It modifies nouns where the unhyphenated phrase "sea level" would be awkward: sea-level measurements show acceleration.

The hyphen signals the compound works as a unit before a noun.

geography

coastal

Of the shoreline

  • lowlandLow-elevation flat land
  • deltaSymbol denoting variation
  • atollRing-shaped reef island

Netherlands · Bangladesh · Maldives · Venice · tidewater · marsh · mangrove · estuary · floodplain · below

elevation

altitude

Measured height above reference

baseline · reference · zero · meters · feet · height · measurement · topography · contour · elevation

climate

rise

Move to higher position

coastal · inundation · erosion · greenhouse · carbon · emissions · IPCC · projections · Antarctica · Greenland

aviation

pressure

Force upon contact

atmosphere · standard · calibration · flight · cockpit · instrument · correction · takeoff · landing · performance

Opposites
elevation/altitude

sea-levelhigh altitude

Great distance upward

mountain peak · summit · alpine · mountaintop · high elevation

topographic variation

sea-levelmountainous

Having many peaks

rugged terrain · elevated · hilly · undulating · steep

atmospheric pressure

sea-levelthin air

Seeming nothingness

low pressure · hypoxic

Family

sea, level, seas, levels, leveled, leveling, leveler, seaward, seaside

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G