The plural of deus may be dii or di in Latin, but in English the regular Latin plural dei is used (see Wiktionary's definition of deus ex machina where it says the plural is dei ex machinis.) On the other hand, Wikipedia has an article on di where it shows it as alternate plural for deus besides dei and dii. I just wonder where ever the noun di has been used in English literature.
- Can someone remove the English entry? Deus isn't even included as an English word, and OED states it's never been nativized.