Is there a name, term, or practice for off-centering things based on volume rather than center of total width?

As an interface designer, and just as a designer in general, I often notice that I feel the need to place things slightly off-center in order to make them appear centered and balanced, due to the items having uneven volume distribution.

I actually can't find an image (or think of a good example) where this is the case, but it has happened many times, and I'm wondering if there's any specific name for doing this kind of balancing.

Ill try and update this with an image example soon when I have time.