1. the boundary between the Earth's crust and mantle, marked by a sudden increase in seismic wave velocity
Usage: geology; short for Mohorovičić discontinuity; also called the Mohorovičić boundary

Examples

• Seismic waves travel faster below the moho than above it.
• The moho lies approximately 35 kilometers beneath the continental crust.
• Geologists study the moho to understand the structure of the Earth.
• The depth of the moho varies between oceanic and continental regions.
• Earthquakes originating near the moho can provide valuable data about crustal composition.