Judged: two independent readers; copy check clear.
extension
extension Extension is the spatial spread or arrangement of positions that exist together, with parts related by distance and direction rather than by their own qualities.
Extension is the spatial spread or arrangement of positions that exist together, with parts related by distance and direction rather than by their own qualities. In historical psychology, it was contrasted with time, whose parts come one after another, and with ordered qualities like pitch, whose order depends on intrinsic differences.