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n. pl. eu·sta·sies
A uniform worldwide change in sea level.

[From eustatic, of eustasy, from German eustatisch : eu- + stat(o)- + -isch, adj. suff.]

eu·stat′ic (-stăt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physical Geography) denoting or relating to worldwide changes in sea level, caused by the melting of ice sheets, movements of the ocean floor, sedimentation, etc
[C20: from Greek, from eu- + static]
eustasy, eustacy n
euˈstatically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Thus, since the Saxby Tide more than seven Saros ago, sea level has risen eustatically nearly 25 cm.
Each set of islands can be considered units because each group would have formed sub-banks when the sea level reached lower levels eustatically (e.g., 40 m, [ILLUSTRATION FOR FIGURE 3 OMITTED]) in the past.