a specialized bony substance covering the root of a tooth | a specialized bony substance covering the root of a tooth |
a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar | a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar |
something that hardens to act as adhesive material | something that hardens to act as adhesive material |
concrete pavement is sometimes referred to as cement | concrete pavement is sometimes referred to as cement |
any of various materials used by dentists to fill cavities in teeth | any of various materials used by dentists to fill cavities in teeth |