Property information
x lumen_of y iff x is the space or substance that is part of y and does not cross any of the inner membranes or boundaries of y that is maximal with respect to the volume of the convex hull.
x lumen_of y iff x is the space or substance that is part of y and does not cross any of the inner membranes or boundaries of y that is maximal with respect to the volume of the convex hull.