fraction

noun

frac·​tion ˈfrak-shən How to pronounce fraction (audio)
1
a
: a numerical representation (such as ³/₄, ⁵/₈, or 3.234) indicating the quotient of two numbers
b(1)
: a piece broken off : fragment
(2)
: a discrete unit : portion
2
: one of several portions (as of a distillate) separable by fractionation
3
: bit, little
a fraction closer

Examples of fraction in a Sentence

a fraction of an inch if even a tiny fraction of that cookie broke off and fell into the delicate watch works, it could mess things up
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Without that aid this year, Avalon resorted to scraping 39,000 cubic yards from other areas of its own beach at its own expense — a small fraction of what is typically needed. Jesus Mesa, MSNBC Newsweek, 21 July 2025 Private, nonpartisan agencies now offer comparable legal protections for a fraction of MSEA’s cost. Jeremy Gosnell, Baltimore Sun, 20 July 2025 That is still just 3% of the total population, a much smaller fraction than in the United States and Europe, but comes amid a tourism boom that has made foreigners far more visible across the country. CNN Money, 20 July 2025 The transcript likely mentions a small fraction of the overall testimony and evidence gathered by the DOJ against the disgraced financier, former assistant United States attorney Sarah Krissoff told ABC News. Kelsey Walsh, ABC News, 19 July 2025 See All Example Sentences for fraction

Word History

Etymology

Middle English fraccioun "act or result of breaking, mathematical fraction," borrowed from Medieval Latin frāctiōn-, frāctiō "breaking, division into parts, mathematical fraction," going back to Late Latin, "breaking, weariness, illness," from Latin frag-, variant stem of frangere "to break, shatter" + -tiōn-, -tiō, suffix of verbal action — more at break entry 1

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of fraction was in the 14th century

Browse Nearby Words

Cite this Entry

“Fraction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fraction. Accessed 25 Jul. 2025.

Kids Definition

fraction

noun
frac·​tion ˈfrak-shən How to pronounce fraction (audio)
1
: a number (as ½, ¾, or 3.323) that represents a number of equal parts of a whole or the division of one number by another
2
: a part of a whole

Medical Definition

fraction

noun
frac·​tion ˈfrak-shən How to pronounce fraction (audio)
: one of several portions (as of a distillate) separable by fractionation
gamma globulin is a fraction of blood plasma

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