Definition of fraction
1a : a numerical representation (as ^{3}⁄_{4}, ^{5}⁄_{8}, or 3.234) indicating the quotient of two numbersb (1) : a piece broken off : fragment (2) : a discrete unit : portion
2 : one of several portions (as of a distillate) separable by fractionation
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
Origin and Etymology of fraction
Middle English fraccioun, from Late Latin fraction, fractio act of breaking, from Latin frangere to break — more at break
First Known Use: 14th century
Other Mathematics and Statistics Terms
FRACTION Defined for English Language Learners
fraction
playDefinition of fraction for English Language Learners

mathematics : a number (such as 1/2 or 3/4) which indicates that one number is being divided by another; also : a number (such as 3.323) that consists of a whole number and a decimal

: a part or amount of something
FRACTION Defined for Kids
fraction
playDefinition of fraction for Students
1 : a number (as ^{1}⁄_{2}, ^{2}⁄_{3}, {frac17/100}) that indicates one or more equal parts of a whole or group and that may be considered as indicating also division of the number above the line by the number below the line
2 : a part of a whole : fragment I sold the car for a fraction of what I paid for it.
Word Root of fraction
The Latin word frangere, meaning “to break,” and its form fractus give us the roots frag and fract. Words from the Latin frangere have something to do with breaking. Something fragile is easily broken. A fraction is a portion broken off from a whole. To fracture something, such as a bone, is to break it. A fragment is a part that has been broken off from something larger or that is incomplete.
Medical Dictionary
fraction
playMedical Definition of fraction
: one of several portions (as of a distillate) separable by fractionation gamma globulin is a fraction of blood plasma
Learn More about fraction

See words that rhyme with fraction Thesaurus: All synonyms and antonyms for fraction Spanish Central: Translation of fraction Nglish: Translation of fraction for Spanish speakers Britannica English: Translation of fraction for Arabic speakers Britannica.com: Encyclopedia article about fraction
Seen and Heard
What made you want to look up fraction? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!