In common usage a fraction is any part of a unit.

See fraction (mathematics), for mathematical meanings and links to

• vulgar fractions, i.e. rational numbers written as one integer (the numerator) divided by a non-zero integer (the denominator),
• quotient field, generalization of the above, including rational functions which can be decomposed in partial fractions,
• continued fractions, which are expression such as , where the a_i are integers,
• pedagogical material and related links.

In religion:

• In some Christian denominations, the Fraction is the ceremonial act of breaking the bread during Communion.