from
The Collaborative International Dictionary of English v.0.48
Incommensurable \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.
[1913 Webster]
They are quantities incommensurable. --Burke.
-- {In`com*men"su*ra*ble*ness}, n. -- {In`com*men"su*ra*bly},
adv.
[1913 Webster]