Mohorovicic discontinuity

from WordNet (r) 3.0 (2006)

Mohorovicic discontinuity
    n 1: 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" [syn:
         {Mohorovicic discontinuity}, {Moho}]

from The Collaborative International Dictionary of English v.0.48

Mohorovicic discontinuity \Mohorovicic discontinuity\, n.
   (Geol.)
   same as 2nd {Moho}.
   [PJC]