Decimal definition

dĕsə-məl
Frequency:
Numbered or ordered by groups of 10.
adjective
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0
Expressed or expressible as a decimal.
adjective
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2
Of or based on the number 10; progressing by tens.
adjective
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2
A fraction with an unwritten denominator of 10 or some power of 10, indicated by a point (decimal point) before the numerator (Ex.: .5 =510)
noun
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2
Any number written using a decimal point.
noun
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2
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A representation of a real number using the base ten and decimal notation, such as 201.4, 3.89, or 0.0006.
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A decimal fraction.
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Meaning 10. The numbering system used by humans, which is based on 10 digits. In contrast, computers use binary numbers because it is easier to design electronic systems that can maintain two states rather than 10.
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Decimal is defined as a system of numbers or currency where everything is based on the number ten, or on parts of ten.

3.432 is an example of a number described as a decimal number.

adjective
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The definition of a decimal is a number written with a decimal point and a remainder that represents portions of ten.

An example of a decimal is 2.5 which is two and five tenths.

noun
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A number written using the base 10.
noun
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1
A linear array of digits that contains a single period, called the decimal point, is possibly preceded by a minus sign (−), and represents a real number, with each successive digit to the right of the decimal point indicating a multiple of the next negative power of 10, and each successive digit to the left of the decimal point indicating a multiple of the next non-negative power of ten, beginning with 100 = 1. For example, 245.3 represents the real number (2 × 102 ) + (4 × 101 ) + (5 × 100 ) + (3 × 10−1 ) = 200 + 40 + 5 +310 , and −1.04 represents the real number (−1 × 100 ) + (−4 × 10−2 ).
noun
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1
Such an array of digits in which there are no nonzero digits to the left of the decimal point, representing a real number between −1 and 1.
noun
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1
Based on 10.
adjective
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(arithmetic, computing, uncountable) The number system that uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
noun
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(countable) A number expressed in this system.
noun
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1
(informal) A decimal place.

Pi has a value of 3.141, to three decimals.

noun
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(informal) A numeral written as a concatenation of successive negative powers of the base.
noun
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(informal) A decimal point.
noun
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(arithmetic, computing) Concerning numbers expressed in decimal or mathematical calculations performed using decimal.
adjective
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1
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Other Word Forms

Noun

Singular:
decimal
Plural:
decimals

Origin of decimal

  • Medieval Latin decimālis of tenths or tithes from Latin decima a tenth part or tithe from decem ten dekm̥ in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Medieval Latin decimalis, from Latin decimus, from decem, ten + adjective suffix -alis

    From Wiktionary