**Dec"i*mal** (?), a. [F. *d'ecimal* (cf. LL. *decimalis*), fr. L. *decimus* tenth, fr. *decem* ten. See Ten, and cf. Dime.]

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 arithmetic, the common arithmetic, in which numeration proceeds by tens. -- Decimal fraction, a fraction in which the denominator is some power of 10, as , , and is usually not expressed, but is signified by a point placed at the left hand of the numerator, as 2, 25. -- Decimal point, a dot or full stop at the left of a decimal fraction. The figures at the left of the point represent units or whole numbers, as 1.05.

© Webster 1913.

**Dec"i*mal**, n.

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

Circulating, ∨ Circulatory, decimal, a decimal fraction in which the same figure, or set of figures, is constantly repeated; as, 0.354354354; -- called also recurring decimal, repeating decimal, and repetend.

© Webster 1913.