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geoid

play
noun ge·oid \ˈjē-ˌȯid\

Definition of geoid

  1. :  the surface within or around the earth that is everywhere normal to the direction of gravity and coincides with mean sea level in the oceans

ge·oi·dal play \jē-ˈȯi-dəl\ adjective


Origin of geoid

German, from Greek geoeidēs earthlike, from


First Known Use: 1881


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