isostasy
noun/aɪˈsɒstəsi/
Frequency rank: #19,996 most common English word
Meaning
the state of gravitational equilibrium in which the Earth's crust floats on the denser mantle, rising or sinking to maintain balance.

Example sentence
Geologists study isostasy to understand how the Earth's crust floats in balance on the mantle below.
Synonyms & related words
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