Incommensurable /(?)/

In·com·men·su·ra·ble

Incommensurable

a.
  1. Not commensurable; having no common measure or standard of comparison; as, quantities are incommensurable when no third quantity can be found that is an aliquot part of both; the side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable.
    They are quantities incommensurable.

Incommensurable

n.
  1. One of two or more quantities which have no common measure.