Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to argillaceous: Argillaceous sandstone, arenaceous


 (är′jə-lā′shəs) or ar·gil·lic (är-jĭl′ĭk)
Containing, made of, or resembling clay; clayey.

[From Latin argillāceus, from argilla, argil; see argil.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Geological Science) (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc. Compare arenaceous1, rudaceous
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɑr dʒəˈleɪ ʃəs)

of the nature of or resembling clay; clayey.
[1725–35; < Latin argillāceus <argilla clay]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.argillaceous - resembling or containing clayargillaceous - resembling or containing clay; "argillaceous rocks"
arenaceous, sandlike, sandy - resembling or containing or abounding in sand; or growing in sandy areas; "arenaceous limestone"; "arenaceous grasses"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
To this the American Review replied that the soil of Florida, although not equally rich, afforded the best conditions for the moulding and casting of the Columbiad, consisting as it did of sand and argillaceous earth.
Although the beaks and feet of birds are generally quite clean, I can show that earth sometimes adheres to them: in one instance I removed twenty-two grains of dry argillaceous earth from one foot of a partridge, and in this earth there was a pebble quite as large as the seed of a vetch.
This change in the vegetation marks the commencement of the grand calcareo argillaceous deposit, which forms the wide extent of the Pampas, and covers the granitic rocks of Banda Oriental.
The Kofi series includes argillaceous basin sediments metamorphosed to greenschist facies.
The Baltoscandian sea also had a very flat seabed and a low depth gradient, which is reflected in a very smooth lateral sedimentation trend from inner ramp pure bioclastic carbonates towards outer ramp argillaceous limestones and marls (Fig.
Oil shale occurs in the Upper Permian Lucaogou Formation ([P.sub.2]l) whose lithology is mainly made up of gray-black oil shale, dolostone, dolomitic sandstone, dolomitic siltstone, sporadic pyrite, tuff, and shale argillaceous siltstone containing bitumen.
The Eocene in other parts of Syria is in a neritic, partly reefoid and partly argillaceous, facies reaching maximum development in Lebanon's Beqa' plateau.
(iii) No disturbing effects from drilling fluid (particularly if stable isotope data should be acquired), or other cutting fluids, or from compressed gas when dry drilling is employed (for some argillaceous rocks).
[6] figured out the negative logarithmic function relation between the axial stress and swelling ratio of argillaceous slate during the process of its swelling.
Based on the data obtained from the compression creep test of the argillaceous sandstone, the meshless method was introduced to study the rock creep, whose formula was derived from the generalized Kelvin model based on fractional calculus.
In rainy season, the argillaceous material, absorbs water and accelerate the mass movement.