siliceous
adjective
si·li·ceous sə-ˈli-shəs 
variants or less commonly silicious
: of, relating to, or containing silica or a silicate
siliceous limestone
Example Sentences
Recent Examples on the Web Granite is a siliceous stone composed primarily of silicates, such as quartz, feldspar, and mica. 
Caitlin Sole, Better Homes & Gardens, 4 Aug. 2022 Whereas 95% of Cognac is produced from the Ugni Blanc grape that thrives above limestone soils, grapes for Armagnac include Ugni Blanc, Folle Blanche, Baco and Colombard, which sprout over quartz sand and siliceous clay soils. Tom Mullen, Forbes, 13 Mar. 2022 This giant phosphorescent abstract layered atoll of cascading siliceous marks of what looks like finger paintings made in a cave or a prisoner making counting strokes and notations on a wall. Jerry Saltz, Vulture, 22 Sep. 2021 Siliceous stones include granite, slate, quartzite, soapstone, and sandstone. Seal Team One, The Seattle Times, 15 May 2017
Caitlin Sole, Better Homes & Gardens, 4 Aug. 2022 Whereas 95% of Cognac is produced from the Ugni Blanc grape that thrives above limestone soils, grapes for Armagnac include Ugni Blanc, Folle Blanche, Baco and Colombard, which sprout over quartz sand and siliceous clay soils. Tom Mullen, Forbes, 13 Mar. 2022 This giant phosphorescent abstract layered atoll of cascading siliceous marks of what looks like finger paintings made in a cave or a prisoner making counting strokes and notations on a wall. Jerry Saltz, Vulture, 22 Sep. 2021 Siliceous stones include granite, slate, quartzite, soapstone, and sandstone. Seal Team One, The Seattle Times, 15 May 2017 Word History
Etymology
Latin siliceus of flint, from silic-, silex hard stone, flint
First Known Use
circa 1656, in the meaning defined above
Medical Definition
siliceous
adjective
si·li·ceous
variants also silicious
sə-ˈlish-əs
: of, relating to, or containing silica or a silicate
a siliceous cement used in dentistry