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WordReference Random House Unabridged Dictionary of American English © 2024si•li•ceous (sə lish′əs),USA pronunciation adj. - Mineralogycontaining, consisting of, or resembling silica.
- Agriculturegrowing in soil rich in silica.
Also, si•li•cious (sə lish′əs).USA pronunciation - Latin siliceus of flint or limestone. See silex, -eous
- 1650–60
Collins Concise English Dictionary © HarperCollins Publishers:: siliceous, silicious /sɪˈlɪʃəs/ adj - of, relating to, or containing abundant silica: siliceous deposits, a siliceous clay
- (of plants) growing in or needing soil rich in silica
sil•i•ca /ˈsɪlɪkə/USA pronunciation n. [uncountable]- Chemistrya form of silicon that occurs esp. as quartz sand, flint, and agate.
si•li•ceous, si•li•cious /səˈlɪʃəs/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024sil•i•ca (sil′i kə),USA pronunciation n. - Chemistrythe dioxide form of silicon, SiO2, occurring esp. as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives. Also called silicon dioxide.
- Neo-Latin, derivative of Latin silex silex
- 1795–1805
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