Rankine
adjective
Ran·kine ˈraŋ-kən 
: being, according to, or relating to an absolute-temperature scale on which the unit of measurement equals a Fahrenheit degree and on which the freezing point of water is 491.67° and the boiling point 671.67°
Word History
Etymology
William J. M. Rankine †1872 Scottish engineer & physicist
First Known Use
circa 1926, in the meaning defined above
Medical Definition
Rankine
adjective
Ran·kine ˈraŋ-kən
: being, according to, or relating to an absolute-temperature scale on which the unit of measurement equals a Fahrenheit degree and on which the freezing point of water is 491.67° and the boiling point 671.67°