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The Mohorovičić discontinuity.
(Geological Science) short for Mohorovičić discontinuity
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|Noun||1.||Moho - the boundary between the Earth's crust and the underlying mantle; "the Mohorovicic discontinuity averages 5 miles down under oceans and 20 miles down under continents"|
geology - a science that deals with the history of the earth as recorded in rocks