adj. (often foll. by with)
1. not comparable in respect of magnitude.
2 incapable of being measured (in comparison with).
3 Math. (of a magnitude or magnitudes) having no common factor, integral or fractional.
4 Math. irrational.
Derivatives:
incommensurability n. incommensurably adv.
Etymology: LL incommensurabilis (as IN-(1), COMMENSURABLE)