argillaceous

adjective
ar·​gil·​la·​ceous | \ ˌär-jə-ˈlā-shəs How to pronounce argillaceous (audio) \

Definition of argillaceous

: of, relating to, or containing clay or clay minerals : clayey

First Known Use of argillaceous

1676, in the meaning defined above

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The first known use of argillaceous was in 1676

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Cite this Entry

“Argillaceous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/argillaceous. Accessed 13 Aug. 2020.

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