decimal system

noun

1. a system of counting or measurement, the units of which are powers of 10: the numerical system in common worldwide use.

noun

1. the number system in general use, having a base of ten, in which numbers are expressed by combinations of the ten digits 0 to 9
2. a system of measurement, such as the metric system, in which the multiple and submultiple units are related to a basic unit by powers of ten

1. A number system based on units of 10 and using decimal notation.
2. A system of measurement in which all derived units are multiples of 10 of the fundamental units.