The frame into which a door is fitted.

(mathematics, arithmetic) A fraction in which both the numerator and the denominator consist of whole numbers.

A frame made of wire / (computing) Alternative form of wireframe

Alternative form of wireframe

(chemistry) The fractional proportion of a substance in a mixture, by weight/mass.

A method of separating a mixture of liquids that have different boiling points

A two-dimensional plane (or other surface) of weakness along which a crystal or other solid will break when under stress.

(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.

Rhododendron arborescens, of the eastern seaboard of the US.

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