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isopach

[ahy-suh-pak]
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noun Geology.
  1. a line drawn on a map connecting all points of equal thickness of a particular geologic formation.
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Origin of isopach

1915–20; iso- + -pach < Greek páchos thickness
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for isopach

isopach

isopachyte (ˌaɪsəʊˈpækaɪt)

noun
  1. geology a line on a map connecting points below which a particular rock stratum has the same thickness
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Word Origin

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