锡石 (錫石) xīshí
          
              xīshí 
              
              noun 
              tin oxide; cassiterite; tinstone 
              Domain: Modern Chinese 现代汉语
              
                , Subdomain: Geology 
              
              
                , Concept: Mineral 矿物
              
              
              
                Notes: Chemical formula: SnO2 (CC-CEDICT '錫石'; Wikipedia '錫石')