geoid

[ jee-oid ]

/ ˈdʒi ɔɪd /

noun

an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents.

the geometric figure formed by this surface, an ellipsoid flattened at the poles.

Origin of geoid

First recorded in 1880–85, geoid is from the Greek word geoeidḗs earthlike. See geo-, -oid

OTHER WORDS FROM geoid

ge·oi·dal, adjective

Words nearby geoid

geographic north, geographic range, geographic south, geography, geohydrology, geoid, geoisotherm, geol., geolocation, geologic, geological cycle

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for geoid

The reduction of triangulation base lines from the geoid to the reference ellipsoid.
Smithsonian Institution - United States National Museum - Bulletin 240|Anonymous
It's geoid teah is this; aw've monny a time ta'en a gooid swig aght o' that teah-pot before to-day.
Yorksher Puddin'|John Hartley
The west-European and the Russo-Scandinavian meridians indicate another anomaly of the geoid.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9|Various
The geoid is defined as the average level of the sea, which is thought of as extended through the continents.
Smithsonian Institution - United States National Museum - Bulletin 240|Anonymous

In physical geodesy, gravimetric data are used for the determination of the geoid and components of deflections of the vertical.
Smithsonian Institution - United States National Museum - Bulletin 240|Anonymous

British Dictionary definitions for geoid

geoid

/ (ˈdʒiːɔɪd) /

noun

a hypothetical surface that corresponds to mean sea level and extends at the same level under the continents

the shape of the earth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for geoid

geoid

[ jē′oid′ ]

The hypothetical surface of the Earth that coincides everywhere with mean sea level and is perpendicular, at every point, to the direction of gravity. The geoid is used as a reference surface for astronomical measurements and for the accurate measurement of elevations on the Earth's surface.

单词	geoid
释义	geoid [ jee-oid ] / ˈdʒi ɔɪd / noun an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. the geometric figure formed by this surface, an ellipsoid flattened at the poles. Origin of geoid First recorded in 1880–85, geoid is from the Greek word geoeidḗs earthlike. See geo-, -oid OTHER WORDS FROM geoid ge·oi·dal, adjective Words nearby geoid geographic north, geographic range, geographic south, geography, geohydrology, geoid, geoisotherm, geol., geolocation, geologic, geological cycle Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for geoid The reduction of triangulation base lines from the geoid to the reference ellipsoid. Smithsonian Institution - United States National Museum - Bulletin 240\|Anonymous It's geoid teah is this; aw've monny a time ta'en a gooid swig aght o' that teah-pot before to-day. Yorksher Puddin'\|John Hartley The west-European and the Russo-Scandinavian meridians indicate another anomaly of the geoid. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9\|Various The geoid is defined as the average level of the sea, which is thought of as extended through the continents. Smithsonian Institution - United States National Museum - Bulletin 240\|Anonymous In physical geodesy, gravimetric data are used for the determination of the geoid and components of deflections of the vertical. Smithsonian Institution - United States National Museum - Bulletin 240\|Anonymous British Dictionary definitions for geoid geoid / (ˈdʒiːɔɪd) / noun a hypothetical surface that corresponds to mean sea level and extends at the same level under the continents the shape of the earth Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for geoid geoid [ jē′oid′ ] The hypothetical surface of the Earth that coincides everywhere with mean sea level and is perpendicular, at every point, to the direction of gravity. The geoid is used as a reference surface for astronomical measurements and for the accurate measurement of elevations on the Earth's surface. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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