Also, characteristical. pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive: Red and gold are the characteristic colors of autumn.

Definition: 2

a distinguishing feature or quality: Generosity is his chief characteristic.

Definition: 3

Mathematics. the integral part of a common logarithm. Compare mantissa. the exponent of 10 in a number expressed in scientific notation. the smallest positive integer n such that each element of a given ring added to itself n times results in 0.