xe·​no·​lith ˈze-nə-ˌlith How to pronounce xenolith (audio) ˈzē- How to pronounce xenolith (audio)
: a fragment of a rock included in another rock
xenolithic adjective

Example Sentences

Recent Examples on the Web Look for a 'turkey gobbler' rock, xenoliths (quartz crystals and other material embedded in boulders) and knife-edge slabs that have flaked off walls of granite. Mare Czinar, azcentral, 5 Mar. 2020 The surrounding landscape would be covered in volcanic ash and debris, some made of erupting magma, some made of chunks of mantle and crust xenoliths. Erik Klemetti, WIRED, 5 May 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'xenolith.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of xenolith was in 1894

Dictionary Entries Near xenolith

Cite this Entry

“Xenolith.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/xenolith. Accessed 29 May. 2023.

More from Merriam-Webster on xenolith

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!