adjective
-
of, relating to, or containing abundant silica
siliceous deposits
a siliceous clay
-
(of plants) growing in or needing soil rich in silica
Other Word Forms
- nonsiliceous adjective
- nonsilicious adjective
Etymology
Origin of siliceous
First recorded in 1650–60, siliceous is from the Latin word siliceus of flint or limestone. See silex, -eous
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Team members also utilized diatoms, a type of siliceous microalgae preserved within the sediments that is sensitive to changes in salinity, to reconstruct the paleoenvironmental changes that occurred following the 1964 earthquake.
From Science Daily
When it comes to cleaning, you also need to be aware of whether your stone countertop or bathroom tile is calcareous or siliceous.
From Seattle Times
Because this style of siliceous fossilization extends long before and after the Ediacaran, the biota’s appearance—and disappearance—were not just an accident of the fossil record, Tarhan says.
From Science Magazine
M. Travers has suggested that it may explain the liberation of helium from minerals by heat, the gas being enabled to permeate the siliceous materials in which it is enclosed.
From Project Gutenberg
The Reading beds consist of mottled and yellow clays and sands, the latter are frequently hardened into masses made up of pebbles in a siliceous cement, known locally as Hertfordshire puddingstone.
From Project Gutenberg
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.