from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A scale of absolute temperature having the same degree increments as those of the Fahrenheit scale, in which the freezing point of water is 491.69° and the boiling point of water is 671.69°.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a scale of absolute temperature in Fahrenheit degrees; the freezing point of water is 491.69 degrees and the boiling point of water is 671.69 degrees
After William John Macquorn Rankine (1820-1872), Scottish engineer and physicist.(American Heritage® Dictionary of the English Language, Fourth Edition)