Ishana (sanskr. Īśāna) - name of aspect of Shiva. The name Ishana is also mentioned in Shiva Mahapurana as one of five names of the god. Īśāna has its roots in the word "ish", which means the invisible power that governs the universe. The wielder of this power, or this power itself, is "Īśāna". It is synonymous with Ishwar, which means "The Lord". In Hindu Scriptures this is a name given to Shiva. As per Hindu scriptures Shiva has five heads, each denoting one of the five tattvas (elements) namely Fire, Earth, Air, Water and Ether (also called as Sky-element or aakash-tattva in sanskrit) that make up the universe. This fifth head of Shiva faces the upward direction, towards the sky.