slickenside

[ slik-uhn-sahyd ]
/ ˈslɪk ənˌsaɪd /

noun Geology.

a rock surface that has become more or less polished and striated by slippage along a fault plane.

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Origin of slickenside

First recorded in 1760–70; slick2 + -en3 + side1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for slickenside

slickenside
/ (ˈslɪkənˌsaɪd) /

noun

a rock surface with a polished appearance and fine parallel scratches caused by abrasion during fault displacement

Word Origin for slickenside

C18: from dialect slicken, variant of slick + side
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

Scientific definitions for slickenside

slickenside
[ slĭkən-sīd′ ]

A polished, striated rock surface formed by one rock mass sliding over another in a fault plane.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.