Is "centerpoint" one word or two? [closed]

I see that "centerpoint" has a definition on Wikipedia that has to do with the mathematical entity, but I don't see it in online dictionaries.

So which sentence below spells the term correctly? This one:

Rays of light will burst out from the centerpoint.

or this one:

Rays of light will burst out from the center point.


Rays of light will burst out from the center point.

It's just the center, no point.

Outside of mathematics, "centerpoint" is a redundancy because center already is defined as a point.