He was part of the powerful triumvirate that included Menrva and Uni. He was associated with lightning, spears and scepters. In the Etruscan language, tin or tinš means "day" and its plural is tinia showing that he is a god governing the passage of time (compare Father Time and Ancient of Days).
Some of Tinia's defining epithets are detailed on the Piacenza Liver, a bronze model of a liver used for haruspicy. Some of his epithets inscribed there include Tin Cilens, Tin Θuf and Tinś Θne.
Some inscriptions in which he appears are as follows.