(mathematics, arithmetic) Any fraction in which either or both of the numerator or denominator are themselves fractions.

A fraction typeset as one glyph. For example, ½ rather than 1/2.

(arithmetic) A proper or improper fraction the denominator of which is a power of ten and the decimal representation of which is a terminating decimal number.

(chemistry) the ratio of the number of moles of one component of a mixture to the total number of moles

(physics, chemistry) the separation of two solutes from the same solution by using either a solvent or a crystallization temperature such that only one solute is supersaturated and crystallizes out

(arithmetic) A fraction in the form of one integer divided by another, non-zero, integer.

(arithmetic) A fraction in the form of one integer divided by another, non-zero, integer.

(arithmetic) A vulgar fraction of which the numerator has a greater magnitude than the denominator, such as 3/2.

(arithmetic) A vulgar fraction in which the magnitude of the numerator is less than or equal to that of the denominator, such as 2/3.

(mathematics, number theory) A compound numerical expression consisting of an integer plus a fraction whose numerator is a positive integer and whose denominator is a continued fraction (an integer plus a fraction), and so on, with finite or infinite recursion.