High Gothic, also called Tech by the Adepts of the Adeptus Mechanicus, is the hieratic tongue of the Imperium of Man, used in the titles of ancient institutions and organisations (such as the Adeptus Terra). It represents an older language than the commonly used Imperial vernacular tongue and is regarded as a sacred tongue since it was the language spoken by the Emperor of Mankind during the era of the Great Crusade in the late 30th Millennium. At that time, the language was simply called "Imperial Terran". In the current Age of the Imperium, High Gothic is the equivalent of the Church Latin used during the mediaeval age of ancient Europe.