What does X-Men X stand for?

X in X-Men and "It seems that the Roman numeral of X stands for 10" are two different things.

What you mean by "like the Roman numeral for X 10" is the tenth weapon in the prequel.

At that time, it was named X, which meant that it was number 10.

And x in the x-men

Because Professor X organized this team.

in addition

The redundant expression of the word ".