Definition of isostasy
1 : general equilibrium in the earth's crust maintained by a yielding flow of rock material beneath the surface under gravitative stress
2 : the quality or state of being subjected to equal pressure from every side
isostaticplay \ˌī-sə-ˈsta-tik\ adjective
isostaticallyplay \ˌī-sə-ˈsta-ti-k(ə-)lē\ adverb
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