silex C2 Topic:Materials & Substances US /ˈsaɪleks/ UK /ˈsaɪleks/ See IPA manual Freq #431395 Meanings 1 noun silica or a hard siliceous material, especially flint Thin bands of dark silex ran through the pale limestone. Thesaurus Synonyms 1 noun · silica or a hard siliceous... silicaflint More siliceous material Word family Derived forms siliceous Related forms quartzchertsilicon dioxide Etymology Borrowed from Latin silex, 'flint or hard stone.' Naturalists and geologists used the Latin term for silica and for rocks or fossil material hardened by silica. Topics Materials & Substances External links Google Images Cambridge Dictionary Wiktionary # silex **Type:** Word **Level:** C2 **Part of speech:** noun **IPA (US):** /ˈsaɪleks/ **IPA (UK):** /ˈsaɪleks/ **Frequency rank:** 431395 ## Meanings 1. silica or a hard siliceous material, especially flint ## Examples - Thin bands of dark silex ran through the pale limestone. ## Synonyms - silica - flint - siliceous material ## Derived Forms - siliceous ## Related Forms - quartz - chert - silicon dioxide ## Etymology Borrowed from Latin silex, 'flint or hard stone.' Naturalists and geologists used the Latin term for silica and for rocks or fossil material hardened by silica. ## Topics - Materials & Substances markdown