Geology, Petrology. of the nature of or resembling clay; clayey.
containing a considerable amount of clayey matter.
Origin of argillaceous
First recorded in 1725–35, argillaceous
is from the Latin
clayish. See argil
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for argillaceous
Historical Examples of argillaceous
It must also not be full of argillaceous and iron-oxide infillings.
Argillaceous rocks, composed essentially of particles of mud.
From clay and chalk, or argillaceous river-mud and chalk or limestone, calcined together, and then ground to powder.
Argillaceous or marly limestone is also of common occurrence.
It alternates with both these rocks, and in like manner with argillaceous schist.
British Dictionary definitions for argillaceous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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