In`com*men"su*ra*ble (?), a. [Pref. in- not + commensurable: cf. F. incommensurable.] 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.

-- In`com*men"su*ra*ble*ness, n. -- In`com*men"su*ra*bly, adv.

In`com*men"su*ra*ble (?), n. One of two or more quantities which have no common measure.