noun Geology.

a line drawn on a map connecting all points of equal thickness of a particular geologic formation.

Origin of isopach

1915–20; iso- + -pach < Greek páchos thickness Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for isopach


isopachyte (ˌaɪsəʊˈpækaɪt)


geology a line on a map connecting points below which a particular rock stratum has the same thickness

Word Origin for isopach

C20: from iso- + Greek pakhus thick, pakhutēs thickness
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