- 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. 2018
- an abandoned research project to drill through the earth's crust down to the Mohorovičić discontinuity to obtain samples of mantle rocks
C20: from Moho (rovičić ) + hole . See Mohorovičić discontinuity