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[gee-oh] /giˈoʊ/
a flat-topped seamount, found chiefly in the Pacific Ocean.
Origin of guyot
1945-50; named after Arnold H. Guyot (1807-84), Swiss-born American geologist and geographer Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for guyot


a flat-topped submarine mountain, common in the Pacific Ocean, usually an extinct volcano whose summit did not reach above the sea surface Compare seamount
Word Origin
C20: named after A. H. Guyot (1807–84), Swiss geographer and geologist
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
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Word Origin and History for guyot

"flat-topped submarine mountain," 1946, named for Swiss geographer/geologist Arnold Guyot (1807-1884).

Online Etymology Dictionary, © 2010 Douglas Harper
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guyot in Science
A flat-topped, extinct submarine volcano having an elevation of over 1,000 m (3,280 ft) above the ocean floor. Guyots are thought to form as volcanos in sea-floor spreading zones and to become extinct as they move away from the spreading zones through plate tectonic forces. Their flat tops are believed to form by the erosional action of waves when they initially project above sea level.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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