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Syllabification: dec·i·mal
Pronunciation: /ˈdes(ə)məl

Definition of decimal in English:


1Relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten: decimal arithmetic
More example sentences
  • The advent of decimal arithmetic reduced the need for such tests.
  • The number system which was used to express this numerical information was based on the decimal system and was both additive and multiplicative in nature.
  • The discovery of the binomial theorem for integer exponents by al-Karaji was a major factor in the development of numerical analysis based on the decimal system.
1.1Relating to or denoting a system of currency, weights and measures, or other units in which the smaller units are related to the principal units as powers of ten: decimal coinage
More example sentences
  • The uniformity of administrative structures was reflected, later, in the imposition of a national, decimal system of weights, measures, and currency.
  • Elaborated between 1790 and 1799, the decimal metric system of weights and measures was zealously promoted under Napoleon.
  • Even if your business cannot join the general changeover to decimal money for a while after Decimal Day - February 15-you still need to prepare now for the introduction of decimal currency.


(also decimal fraction) Back to top  
1A fraction whose denominator is a power of ten and whose numerator is expressed by figures placed to the right of a decimal point.
Example sentences
  • We can use arithmetics with different bases, fractions, decimals, logarithms, powers, or simply words.
  • How do you convert decimals and percentages to fractions?
  • Basic means a level that really does not exceed primary school: fractions, decimals, percentages and ratios.
1.1The system of decimal numerical notation.
Example sentences
  • The same must well have been true of changing our monetary system to decimal.
  • In addition to binary and decimal, computers can also speak in octal and hex.
  • Though the entries of the table are in decimal, notation along the rows and columns is in hexadecimal.


early 17th century: from modern Latin decimalis (adjective), from Latin decimus 'tenth'.



Example sentences
  • Metric units are related decimally.
  • He also suggested a standard linear measurement, which he called the mille, based on the length of the arc of one degree of longitude on the Earth's surface and divided decimally.
  • The infantry were organized decimally in units of a thousand, with a company and section structure under designated officers.

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