decimal

Etymology

Borrowed from Late Latin, Medieval Latin decimalis, from Latin decimus, from decem (“ten”) + adjective suffix -alis.

noun

1. (countable) A number expressed in the base-ten system, (particularly) a fractional numeral written in this system.
   What is ⁷⁄₂₃ as a decimal?
2. (informal, uncountable) The decimal system itself.
3. (informal) A decimal place.
   Pi has a value of 3.142, to three decimals.
4. (informal) A decimal point.

adj

1. (arithmetic, computing) Concerning numbers expressed in decimal or mathematical calculations performed using decimal.

verb

1. To represent with numbers after a decimal point.
   Single- decimaled entries, often originating in Whiting (Wh) or Wilson (OW; see p. 23, fn.3), are from SPL. To save space, examples cited in SPL are normally not repeated (examples therefore begin with "Add:"). Double- decimaled entries, again often based on Wh or OW, are "new." 1984, Robert William Dent, Proverbial Language in English Drama Exclusive of Shakespeare, 1495-1616: An Index
   simplified, substantively interpretable versions of the optimal (but many-decimaled) linear combinations of your original variables 2001, Richard J. Harris, A Primer of Multivariate Statistics, page 54
   So naturally, 3/14 – the 14th of March – is celebrated as “Pi Day.” And since 3.14 is the beginning, not the end of Pi – it can be decimaled on out to infinity – and since the next two numbers are 1 and 5 voila! today’s date 3/14/15 is really special. 2015, Brad Knickerbocker, It’s Pi Day! Let’s have some pie., Christian Science Monitor