Full Idea
Grounding is a posit introduced by metaphysicians in an attempt to devise a relation that can accommodate dependence between things in the world.
Gist of Idea
Grounding is intended as a relation that fits dependences between things
Source
Baron,S/Miller,K (Intro to the Philosophy of Time [2019], 5.6)
Book Reference
Baron,S/Miller,K: 'Introduction to the Philosophy of Time' [Polity 2019], p.138
A Reaction
Grounding is a recent concept which seems to have lots of enemies, but I assume you can only reject it if you reject the concept of dependence - yet that seems a fairly obvious fact to me. My favoured metaphysical relation is 'determination'.