slick·​en·​side ˈsli-kən-ˌsīd How to pronounce slickenside (audio)
: a smooth often striated surface produced on rock by movement along a fault or a subsidiary fracture
usually used in plural

Example Sentences

Recent Examples on the Web The 150-foot-long and 75-foot-tall surface is one of the largest chert slickensides exposures in California. Thomas Graham,, 28 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'slickenside.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


English dialect slicken smooth (from slick entry 1) + English side

First Known Use

1822, in the meaning defined above

Time Traveler
The first known use of slickenside was in 1822

Dictionary Entries Near slickenside

Cite this Entry

“Slickenside.” Dictionary, Merriam-Webster, Accessed 31 Jan. 2023.

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