Decimal a. : Of or pertaining to decimals; numbered or proceeding by tens; having a tenfold increase or decrease, each unit being ten times the unit next smaller; as, decimal notation; a decimal coinage.

Decimal n. : A number expressed in the scale of tens; specifically, and almost exclusively, used as synonymous with a decimal fraction.

Example:
What is dotted Decimal notationHow would you convert 130 to dotted Decimal notation?

Taxonomy
decimal, decimal fractions, decimal representation, denominator, rational numbers, representation, decimal system, languages, Decimal notation, digits, decimal separator, recurring decimal, binary representation, number system, numerals, free encyclopedia, power of ten, notation.

Defination from the web:
decimal powers (1, 10, 100, 1000) and secondary symbols for half these values (5, 50, 500) ... These digits are often used with a decimal separator which indicates the start of a fractional part, and with a symbol such as the plus sign ...