Geniuses or Genii, the correct plural of the word 'genius'?

Question

Is it debatable or is 'genii' the definite correct plural of 'genius'? I thought 'geniuses' is the english translation of the latin 'genii'? Maybe not?

~Thank you in advance for any answers.

Answer 1

I didn't know about Genni...I usually say geniuses..

Answer 2

As far as I know, and I don't pretend to know everything, the plural of genius is geniuses.  I've never heard of genii.  

Answer 3

Geniuses, Genii, they both are plural of genius.

Answer 4

English borrowed a lot of words from Latin. Genius was one of them. Genii is the correct form of the Latin plural. Which, when anglicized, is geniuses.  

Answer 5

Genii is the plural of genius as in guardian spirits in Roman Mythology.  Geniuses is the plural of genius as in a really smart person.