
Originally Posted by
Iscah
What you're calling an egg is consistently referred to as the "dead sun" within the game so I took the blue stuff to be star-gas, except behaving like a liquid because... reasons. Gravity is weird in that place.
Given that "the Terminus" simply means "the end", I feel like it was a missed opportunity that they didn't call the final zone by that name. It would have set the mood so much better.
(And given their love of referencing past FF games, it would be a nod to Kingdom Hearts' "End of the World" final zone besides.)
While I don't think it was the main reason, I am inclined to believe the naming was to be more evocative of where it is, and because there's more meme potential.
(Spoiler about final zone)
As the zone is trying to be essentially "The end of the universe", and there is a literal Douglas Adams' Restaurant at the End of the Universe, amongst other things. Ultima Thule really just meaning "the extreme limit of travel and discovery."
That said, there really was no reason it couldn't just be named "Terminus", since that has lots of potential with memes etc as well via Dr. Who. Both are equally Latin and similar in meaning. Lost opportunity I guess?