fraction

American  

[frak-shuhn] / ˈfræk ʃən /

noun

1. Mathematics.

   1. a number usually expressed in the form a/b.

   2. a ratio of algebraic quantities similarly expressed.

2. Chemistry. (in a volatile mixture) a component whose range of boiling point temperatures allows it to be separated from other components by fractionation.

3. a part as distinct from the whole of anything; portion or section.

   The meeting started with a fraction of us present.

4. a very small part or segment of anything; minute portion.

   Only a fraction of the work was completed on time.

5. a very small amount; a little bit.

   It was only a fraction away from completion.

6. a piece broken off; fragment or bit.

7. the act of breaking.

8. Ecclesiastical. (in a Eucharistic service) the breaking of the Host.

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verb (used with or without object)

1. to divide or break into fractions, sections, factions, etc..

   Dissension threatens to fraction the powerful union.

fraction British  

/ ˈfrækʃən /

noun

1. maths

   1. a ratio of two expressions or numbers other than zero

   2. any rational number that is not an integer

2. any part or subdivision

   a substantial fraction of the nation

3. a small piece; fragment

4. chem a component of a mixture separated by a fractional process, such as fractional distillation

5. Christianity the formal breaking of the bread in Communion

6. the act of breaking

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verb

1. (tr) to divide

fraction Scientific  

/ frăk′shən /

1. A number that compares part of an object or a set with the whole, especially the quotient of two whole numbers written in the form a/b. The fraction 1/2, which means 1 divided by 2, can represent such things as 10 pencils out of a box of 20, or 50 cents out of a dollar.

2. See also decimal fraction improper fraction proper fraction

3. A chemical component separated by fractionation.

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fraction Cultural  

1. A mathematical expression representing the division of one whole number by another. Usually written as two numbers separated by a horizontal or diagonal line, fractions are also used to indicate a part of a whole number or a ratio between two numbers. Fractions may have a value of less than one, as with 1/2, or equal to one, as with 2/2, or more than one, as with 3/2. The top number of a fraction is the numerator and the bottom number is the denominator.

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Usage

What does fraction mean? A fraction is any part separated or distinct from its whole, as in After the party, just a fraction of the large cake was left.A fraction can also be a very small part of a whole, as in We only understand a fraction of how the human mind works.In mathematics, fraction is a number that is expressed as a proportion, as 1/2 or 2/3. The number on the bottom represents the total number of parts of one unit, while the number on the top is the portion of the unit being considered. For example, in 1/2 the 2 represents two halves of one whole and the 1 represents the amount of parts being observed, in this case one.To fraction means to divide into sections or fractions, as in Politics often fractions people into self-interested groups.Example: That announcement is only a fraction of what’s in store tonight.

Related Words

See part.

Other Word Forms

• subfraction noun

Etymology

Origin of fraction

First recorded in 1350–1400; Middle English fraccioun, from Late Latin frāctiōn- (stem of frāctiō ) “a breaking (in pieces),” equivalent to Latin frāct(us) (past participle of frangere “to break, shatter”; break ) + -iōn- -ion

Example Sentences

Saving a fraction of that with vibe coding isn’t worth the legal and compliance risks for most companies, he said.

From The Wall Street Journal

That was reminiscent of the slide that occurred almost exactly a year ago when DeepSeek from China External link offered a credible AI alternative at a fraction of the cost of OpenAI’s ChatGPT.

From Barron's

Except that represents only a fraction of the total Russian contingent in Italy.

From The Wall Street Journal

“We’re like magnets,” said Frank, a retired middle-school teacher from Burbank, his Dodgers jersey weighed down by about 100 pins, a fraction of the few thousand he brought.

From Los Angeles Times

“It will only operate a fraction of oil production, most likely less than a third,” he said.

From The Wall Street Journal

Related Words

• chunk
• half
• portion