catflap.org Online Dictionary Query

  Commensurable \Com*men"su*ra*ble\, a. [L. commensurabilis; pref.
     com- + mensurable. See Commensurate, and cf.
     Commeasurable.]
     Having a common measure; capable of being exactly measured by
     the same number, quantity, or measure. --
     Com*men"su*ra*ble*ness, n.
  
     Commensurable numbers or quantities (Math.), those that
        can be exactly expressed by some common unit; thus a foot
        and yard are commensurable, since both can be expressed in
        terms of an inch, one being 12 inches, the other 36
        inches.
  
     Numbers, or Quantities, commensurable in power, those
        whose squares are commensurable.