a. 十进位的, 小数的

n. 十进制, 小数

[计] 十进制, 小数点

[经] 小数的, 十进位的

Decimal \Dec"i*mal\, a. [F. d['e]cimal (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 2/10, [frac25x100], 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.


Decimal \Dec"i*mal\, n.
A number expressed in the scale of tens; specifically, and
almost exclusively, used as synonymous with a decimal
fraction.

{Circulating decimal}, or {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}.