Also called decimal fraction. a fraction that has a denominator of a power of ten, the power depending on or deciding the decimal place. It is indicated by a decimal point to the left of the numerator, the denominator being omitted. Zeros are inserted between the point and the numerator, if necessary, to obtain the correct decimal place
any number used in the decimal system
relating to or using powers of ten
of the base ten
(prenominal) expressed as a decimal
C17: from Medieval Latin decimālis of tithes, from Latin decima a tenth, from decem ten
c.1600, from Medeival Latin decimalis "of tithes or tenths," from Latin decimus "tenth," from decem "ten" (see ten). Applied to Arabic notation before modern sense of "decimal fractions" emerged. As a noun from 1640s.