(historical) A French coin minted from 1795 to 1801 and from 1814 to 1815, valued at one-tenth of a franc. / (informal) A 10-centime coin, minted up to 1999 and bearing the same value.

(transitive, intransitive): To convert to the decimal system.

A number written with a point to show parts less than one.

A method of writing IP addresses with where value of each byte is given as a decimal number, and each byte separated by a dot.

Prior to decimalisation (specifically the decimalisation of British and Irish currency).

(mathematics) A decimal representation of a real number that, at some point, becomes periodic (and repeats some sequence of digits infinitely)

plural of packed decimal

(idiomatic) ten, a group of ten

plural of binary decimal

(dated) A binary (base-2) numeral. / (informal) Used other than figuratively or idiomatically: A decimal (numeral written as a concatenation of successive negative powers of the base) in base 2..