adjective of or pertaining to
ontology, the branch of metaphysics that studies the
nature of existence or being as such; metaphysical:
Some of the U.S. founders held an ontological belief in natural rights.
Sometimes, on·to·log·ic, on·tol·o·gis·tic.
Related forms non·on·to·log·i·cal, adjective
un·on·to·log·i·cal, adjective