Hades three-headed guard dog Cerberus. The Etruscan god Aita and the Roman gods Dis Pater and Orcus were eventually taken as equivalent to Hades and merged into Pluto, a Latinization of Plouton (", Ploútōn"), itself a euphemistic title often given to Hades. The origin of Hades' name is uncertain, but has generally been seen as meaning "the unseen one" since antiquity. An extensive section of Plato's dialogue "Cratylus" is devoted to the etymology of the god's name, in which Socrates is arguing for a folk etymology not from "unseen" but from "his knowledge ("eidenai") of all noble things". Modern linguists have
Names of God "god". The term may have originally been a borrowing from the Iranian languages. Shàngdì (上帝 pinyin "shàng dì", literally 'King Above') is used to refer to the Christian God in the Standard Chinese Union Version of the Bible. Shén 神 (lit. "God", "spirit", or "deity") was adopted by Protestant missionaries in China to refer to the Christian God. In this context it is usually rendered with a space, " 神", to demonstrate reverence. Zhŭ and Tiānzhǔ 主,天主 (lit. "Lord" or "Lord in Heaven") are equivalent to "Lord"; these names are used as formal titles of the Christian God in Mainland