surrounded_by surrounded by surrounded by RO:0002219 surrounded_by surrounded_by uberon x surrounded_by y iff: x is adjacent to y and for every region r adjacent to x, r overlaps y x surrounded_by y if and only if (1) x is adjacent to y and for every region r that is adjacent to x, r overlaps y (2) the shared boundary between x and y occupies the majority of the outermost boundary of x Chris Mungall adjacent_to adjacent to surrounds surrounds pending final vetting axiom holds for all times