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Deus (Classical Latin: [ˈd̪e.ʊs], Ecclesiastical Latin: [ˈd̪ɛː.us]) is the Latin word for "god" or "deity". Latin deus and dīvus ("divine") are in turn descended from Proto-Indo-European *deiwos, "celestial" or "shining", from the same root as *Dyēus, the reconstructed chief god of the Proto-Indo-European pantheon.
In Classical Latin, deus (feminine dea) was a general noun[1] referring to a deity, while in technical usage a divus or diva was a figure who had become divine, such as a divinized emperor. In Late Latin, Deus came to be used mostly for the Christian God. It was inherited by the Romance languages in Galician and Portuguese Deus, Catalan and Sardinian Déu, French and Occitan Dieu, Friulian and Sicilian Diu, Italian Dio, Spanish Dios and (for the Jewish God) Ladino דייו/דיו Dio/Dyo, etc., and by the Celtic languages in Welsh Duw, and Irish and Scottish Gaelic Dia.