silex
Si"lex, n. Etym: [L., a finit, a pebblestone.] (Min.) Defn: Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See Silica, and Silicic.
Si"lex, n. Etym: [L., a finit, a pebblestone.] (Min.) Defn: Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See Silica, and Silicic.