adjective Also sp. siˈlicious
1. of, containing, or like silica
2. growing in soil that has a large proportion of silica in it
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'siliceous'L siliceus