noun \ˈfrak-shən\

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

Full Definition of FRACTION

a :  a numerical representation (as 34, 58, or 3.234) indicating the quotient of two numbers
b (1) :  a piece broken off :  fragment
(2) :  a discrete unit :  portion
:  one of several portions (as of a distillate) separable by fractionation
:  bit, little <a fraction closer>

Examples of FRACTION

  1. a fraction of an inch
  2. <if even a tiny fraction of that cookie broke off and fell into the delicate watch works, it could mess things up>

Origin 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

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb

Rhymes with FRACTION


noun \ˈfrak-shən\   (Medical Dictionary)

Medical Definition of FRACTION

: one of several portions (as of a distillate) separable by fractionation <gamma globulin is a fraction of blood plasma>


noun    (Concise Encyclopedia)

In arithmetic, a number expressed as a quotient, in which a numerator is divided by a denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator. If the numerator is greater, it is called an improper fraction and can also be written as a mixed number—a whole-number quotient with a proper-fraction remainder. Any fraction can be written in decimal form by carrying out the division of the numerator by the denominator. The result may end at some point, or one or more digits may repeat without end.


Next Word in the Dictionary: fractional
Previous Word in the Dictionary: fracted
All Words Near: fraction

Seen & Heard

What made you want to look up fraction? Please tell us where you read or heard it (including the quote, if possible).