Pronunciation: (mō"hô-rō'vu-chich, -hō-), [key] Geol.
the discontinuity between the crust and the mantle of the earth, occurring at depths that average about 22 mi. (35 km) beneath the continents and about 6 mi. (10 km) beneath the ocean floor. Also,Mo'ho.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.