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silica [silicas]▼◼◼◼(silicon dioxide)noun[UK: ˈsɪ.lɪk.ə] [US: ˈsɪ.lɪk.ə]
siliceous▼◼◼◼(relating to silica)adjective[UK: sɪ.ˈlɪ.ʃəs] [US: sɪ.ˈlɪ.ʃəs]
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