The term 'melted together' can be described as being FUSED, which is a 5 letter word. FUSED means to be joined together by melting or heating, usually under pressure. This process is often used in welding and other metalworking processes. It can also refer to the joining of two materials that have been melted together, such as glass or plastic. In general, when two materials are FUSED together, they become one solid piece.