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Containing, resembling, relating to, or consisting of silica.

[From Latin siliceus, of flint, from silex, silic-, flint.]
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.


(sɪˈlɪʃəs) or


1. (Geological Science) of, relating to, or containing abundant silica: siliceous deposits; a siliceous clay.
2. (Botany) (of plants) growing in or needing soil rich in silica
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or si•li•cious

(səˈlɪʃ əs)

containing, consisting of, or resembling silica.
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.siliceous - relating to or containing or resembling silica; "gritrock is siliceous sandstone"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[sɪˈlɪʃəs] ADJsilíceo
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


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References in classic literature ?
Professor Ehrenberg [3] finds that this dust consists in great part of infusoria with siliceous shields, and of the siliceous tissue of plants.
What the exact system might be, if there was any, beyond the placing of them for a long period of years under the drip, I never discovered, but there they sat, iced over and preserved for ever by the siliceous fluid.
The swede-field in which she and her companion were set hacking was a stretch of a hundred odd acres, in one patch, on the highest ground of the farm, rising above stony lanchets or lynchets--the outcrop of siliceous veins in the chalk formation, composed of myriads of loose white flints in bulbous, cusped, and phallic shapes.
The topography is of generally low relief, with low granite hills to the east and a small siliceous ridge along the granite-greenstone boundary.
Among the different polymer types, cellular encapsulation including hyaluronic acid, alginate, agarose, siliceous encapsulate, cellulose sulphate, chitosan, and other polymers have been used for encapsulation.
The study revealed that siliceous impurities are prominent in Sakesar Limestone.
In addition, volcanic debris, siliceous fragments, quartz particles and feldspars were widely distributed in dolomitic lithic sandstone.
This might, say researchers, have major implications for the health of marine siliceous organisms during periods of significant ice cover and rapid deglaciation.
Siliceous earth (SE) is kind of soft, porous, homogeneous, light-weight, and forms a separate sedimentary unit in the Barmer basin, it was first found and developed by Haffmann mineral in Neuburg (Germany).