1) Fahrenheit substitute 2) Temperature unit 
Rankine most commonly refers to: ==Other People== ...[crater] This is an insignificant, bowl-shaped formation with a negligible interior floor. The crater is circular and symmetrical, and the sloping interior walls are nearly featureless (although they have a slightly higher albedo than the surrounding terrain.) It is otherwise indistinguishable from many other comparably sized craters on the...
A temperature scale, having a degree equal to the Fahrenheit degree but having a zero point at absolute zero. The freezing point of water is at 459.69oR.
Type: Term Pronunciation: rangk′kin Definitions: 1. William J. McQ., Scottish physicist, 1820-1870. See: Rankine scale
[n] - a unit of temperature on the Rankine scale
noun a unit of temperature on the Rankine scale