incommensurable

An incommensurable value or quantity; an irrational number.

Of two real numbers, such that their ratio is not a fraction of two integers.

(arithmetics) Of two integers, having no common integer divisor except 1.

Not able to be measured by the same standards as another term in the context.

“The side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable.”