Definition of diathermancy
: the ability to transmit infrared radiation — compare athermancy
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Origin and Etymology of diathermancy
diathermancy from French diathermansie, from Greek dia- + thermansis heating, from thermainein to heat, from thermos hot; diathermacy from French diathermasie, from Greek diathermasia heating effect, from diathermainein to heat through, from dia- + thermainein
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