(cartography) The scale of a map expressed as a fraction. For example, 1/63,360 or 1:63,360 indicates a scale of one inch to the mile.

(mathematics) A vulgar fraction whose denominator is a power of two, or a rational number representable as such a fraction.

(mathematical analysis, uncountable) The branch of mathematics that studies generalisations of calculus to allow noninteger (i.e., real or complex) powers of the differentiation operator D and the integration operator J; (countable) any one of said generalisations of calculus.

(typography) The slash variant ⟨⁄⟩ used for expressing fractions.

plural of fraction slash

plural of fraction bar

(typography, mathematics) The line separating the numerator from the denominator, whether horizontal, (sometimes proscribed) oblique, or diagonal.

(process engineering, chemistry) A process used to separate substances with different melting points.

(mathematics) A fraction which reduces to the form 0/0 for a particular value of the variable which enters it, usually in consequence of the existence of a common factor in both terms of the fraction, which factor becomes 0 for this particular value of the variable.

plural of vanishing fraction