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“athermic”
athermic (adjective)
1. Without fever or with no rise of temperature: "Since the woman's temperature didn't get any higher, the doctor was relieved to see that she was getting closer to the athermic condition that he was striving to achieve for her."
2. Not pervious (not open to passage or entrance) to heat or heat-rays: "The athermic coating on the space shuttle proved to be successful when it re-entered the earth’s atmosphere."
3. Afebrile or characterized by the absence of fever: "After a worrisome night, the baby seemed to be athermic and now had a cool forehead and no fever."
4. Heatless: "It was speculated that many of the planets in the solar system were of an athermic nature; that is, they had no natural heat."
2. Not pervious (not open to passage or entrance) to heat or heat-rays: "The athermic coating on the space shuttle proved to be successful when it re-entered the earth’s atmosphere."
3. Afebrile or characterized by the absence of fever: "After a worrisome night, the baby seemed to be athermic and now had a cool forehead and no fever."
4. Heatless: "It was speculated that many of the planets in the solar system were of an athermic nature; that is, they had no natural heat."