bn:00069976n
Noun Concept
Categories: Altitudes in aviation, Geography terminology, Sea level, Vertical datums, Topography
EN
sea level  above mean sea level  AMSL  Eustacy  Eustasis
EN
Level of the ocean's surface (especially that halfway between mean high and low tide); used as a standard in reckoning land elevation or sea depth WordNet 3.0
Definitions
Relations
Sources
EN
Level of the ocean's surface (especially that halfway between mean high and low tide); used as a standard in reckoning land elevation or sea depth WordNet 3.0 & WordNet 2020
Mean sea level is an average level of the surface of one or more of Earth's bodies of water from which heights such as elevation may be measured. Wikipedia
Average level for the surface of one or more of Earth's oceans Wikidata
The level of the surface of the ocean; especially, the mean level halfway between high and low tide, used as a standard in reckoning land elevation or sea depths. OmegaWiki
[Used to indicate the elevation on the ground or altitude in the air of an object, relative to the average sea level datum.] OmegaWiki
The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured. Wiktionary
Nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured. Wiktionary (translation)