siliceous

or si·li·cious

[ suh-lish-uh s ]

/ səˈlɪʃ əs /

adjective

containing, consisting of, or resembling silica.

growing in soil rich in silica.

Nearby words

Origin of siliceous

First recorded in 1650–60, siliceous is from the Latin word siliceus of flint or limestone. See silex, -eous

Related formsnon·si·li·ceous, adjectivenon·si·li·cious, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for siliceous

The rejected scoriæ have been found to be composed of siliceous matter 59, oxide of copper 1, oxide of tin 0·7.
A Dictionary of Arts, Manufactures and Mines|Andrew Ure
This is the fluor acid which volatilises the siliceous substance.
Theory of the Earth, Volume 1 (of 4)|James Hutton
They appear to have been cracks, into which siliceous matter was infiltered.
A Manual of Elementary Geology|Charles Lyell.
Siliceous limestones, where their silica is original and of organic origin, have contained skeletons of sponges or radiolaria.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6|Various

The siliceous grains in sand are usually rounded, as if by the action of running water.
A Manual of Elementary Geology|Charles Lyell.

British Dictionary definitions for siliceous

siliceous

silicious

/ (sɪˈlɪʃəs) /

adjective

of, relating to, or containing abundant silicasiliceous deposits; a siliceous clay

(of plants) growing in or needing soil rich in silica

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for siliceous

siliceous

[ sĭ-lĭsh′əs ]

Resembling or containing silica.