From PathfinderWiki
Dimensionality, or the nature of movement and location, can become complicated in foreign planes and pocket dimensions.

In physics and mathematics, the dimension of a space or object is informally defined as the minimum number of coordinates needed to specify any point within it.1 The word "dimension" is also used to refer the metaphysical planar properties that governs movement between planes in much the same sense as physical dimensions on the Material Plane govern movement within it, and is sometimes used to refer specifically to the transitive planes.2

Extradimensionality, in turn, refers to positioning and movement in spaces that exist outside of any plane or dimension, such as the location of a demiplanes that exists outside of any other plane.2


  1. Dimension, Wikipedia.
  2. 2.0 2.1 Robert Brookes et al. (2018). "Introduction". Planar Adventures, p. 5. Paizo Inc. ISBN 978-1-64078-044-6

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