eustasy

American  

[yoo-stuh-see] / ˈyu stə si /

Or eustacy

noun

Geology.

plural

eustasies

1. 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.

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Other Word Forms

• eustatic
  adjective
• eustatically
  adverb

Etymology

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