Yes, there's always that. However, when we look closer, it is not applicable to a known spiritual world.
"The term
metaphysics, as used by one school of philosophers, is narrowed down to mean the science of
mental phenomena and of the laws of
mind, In this sense, it is employed, for instance, by Hamilton ("Lectures on Metaph.", Lect. VII) as synonynous with psychology"
http://www.newadvent.org/cathen/10226a.htm
Well, the carnal mind is at emnity (the enemy of) with God, and the spirit world!
"that collection of
Aristotelean treatises which since then goes by the name of the "Metaphysics".
Aristotle himself had referred to that portion of philosophy as "the theological science" (
theologikê), because it culminated in the consideration of the
nature of God, and as "first philosophy" (
prôtê philosophia), both because it considered the first causes of things, and because, in his estimation, it is first in importance. The editor, however, overlooked both these titles, and, because he believed that that part of the
Aristotelean corpus came naturally after the physical treatises, he entitled it "after the physics". This is the historical origin of the term"
So, it was relagated to second fiddle, apparently, after physics. So I think it is therefore best applied to those who embrace only physical things as a theology (modern science). Since modern physical only based speck ulations have come up with some doozies like granny and the speck.
But the real study not of some abstract 'nature of God' or whatever, but of the spirits, and spiritual world is not something that comes 'after the physics', but along with it, and before it, and after it, and all around it!
So, I think I'll settle on '
Spirysics' as the official title of this disipline! -Namely the study of the spiritual universe.
So, how about the merged universe coming, I wonder what a good term for this study is? 'Mergysics'? And of course, we already are very familiar with their nice poor cousin, 'physics'!