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or eustacy

[yoo-stuh-see] /ˈyu stə si/
noun, plural eustasies. Geology.
any uniformly global change of sea level that may reflect a change in the quantity of water in the ocean, or a change in the shape and capacity of the ocean basins.
Origin of eustasy
1945-50; nominalization of eustatic caused by eustasy (< German eustatisch, coined by Austrian geologist Edward Suess (1831-1914); see eu-, static), with -stasy for -stasis stasis, probably on the model of ecstasy
Related forms
[yoo-stat-ik] /yuˈstæt ɪk/ (Show IPA),
eustatically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for eustatic


denoting or relating to worldwide changes in sea level, caused by the melting of ice sheets, movements of the ocean floor, sedimentation, etc
Derived Forms
eustasy (ˈjuːstəsɪ) noun
eustatically, adverb
Word Origin
C20: from Greek, from eu- + static
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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eustatic in Science

A uniform worldwide change in sea level caused especially by fluctuations in the amount of water taken up by continental and polar icecaps, or by a change in the capacity of ocean basins.

eustatic (y-stāt'ĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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