a hole bored through the earth's crust into the region below the Mohorovičić discontinuity, for geological research.
Origin of Mohole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an abandoned research project to drill through the earth's crust down to the Mohorovičić discontinuity to obtain samples of mantle rocks
Word Origin for Mohole
C20: from Moho (rovičić ) + hole . See Mohorovičić discontinuity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012