Definition of Moho
: the boundary layer between the earth's crust and mantle whose depth varies from about 3 miles (5 kilometers) beneath the ocean floor to about 25 miles (40 kilometers) beneath the continents
Origin and Etymology of moho
short for Mohorovicic discontinuity, from Andrija Mohorovičić †1936 Yugoslavian geologist
First Known Use: 1952
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