Sentence:  Several germanium resistors have been thermally cycled from 300 to 4.2 * * f and their resistances have been found to be reproducible within 1 3 millidegree when <WSD>temperatures</WSD> were derived from a vapor pressure thermometer whose tubing is jacketed through most of the liquid helium . 
Meaning of the word marked with <WSD> tags:  the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)