decimal

[des-uh-muh l, des-muh l]
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Origin of decimal

1600–10; < Medieval Latin decimālis of tenths, equivalent to Latin decim(a) tenth (derivative of decem ten) + -ālis -al1
Related formsdec·i·mal·ly, adverb
Can be confuseddecimal decimate destroy (see usage note at decimate) (see synonym study at destroy)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for decimal

decimal

noun
  1. 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
  2. any number used in the decimal system
adjective
    1. relating to or using powers of ten
    2. of the base ten
  1. (prenominal) expressed as a decimal
Derived Formsdecimally, adverb

Word Origin for decimal

C17: from Medieval Latin decimālis of tithes, from Latin decima a tenth, from decem ten
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for decimal
adj.

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.

Online Etymology Dictionary, © 2010 Douglas Harper

decimal in Science

decimal

[dĕsə-məl]
  1. A representation of a real number using the base ten and decimal notation, such as 201.4, 3.89, or 0.0006.
  2. A decimal fraction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.