decimal fraction

noun

: a fraction (such as .25 = 25/100 or .025 = 25/1000) or mixed number (such as 3.025 = 3 25/1000) in which the denominator is a power of 10 usually expressed by use of the decimal point

Word History

First Known Use

1660, in the meaning defined above

Time Traveler
The first known use of decimal fraction was in 1660

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Cite this Entry

“Decimal fraction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decimal%20fraction. Accessed 9 Nov. 2025.

Kids Definition

decimal fraction

noun

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