(arith.) of or based on the number 10; decimal.

any of the ten equal parts of something.

(arith.) a fraction with an unwritten denominator of 10 or some power of 10, indicated by a point (decimal point) before the numerator; a decimal.

a decimal fraction in which after certain point one figure or group of figures is repeated to infinity; (e.g. ⅓ = 0.3333….333333).