The crossword solution for the term 'Smelting Need' is ORE, which stands for 'Original Rock Element'. ORE is a type of rock that contains minerals and metals that can be extracted through smelting. Smelting is a process of heating ORE to a high temperature in order to separate the metal from the mineral. The need for smelting arises when ORE is found in its natural form and needs to be processed in order to extract the valuable metal.