n.
Pronunciation: ' m ō - ˌ h ō
Function: noun
Etymology: short for Mohorovicic discontinuity, from Andrija Mohorovi č i ć † 1936 Yugoslavian geologist
Date: 1952
: 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