硅质岩 Save Sign in to save words Traditional (Taiwan): 硅質岩 guīzhìyán ㄍㄨㄟ ㄓˋ ㄧㄢˊ siliceous rock (mostly composed of silica) Character by character 硅(guī)silicon 质(zhì)character 岩(yán)cliff A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0