Where does “diathermal” come from?

diathermal (English) comes from English thermal, from French thermal, from New Latin thermalis, from Ancient Greek Θέρμη, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.

diathermal (English): Freely permeable by radiant heat

Definitions

  1. Freely permeable by radiant heat

Ancestry of “diathermal”, step by step

diathermal traces back through two separate lines of ancestry.

via English thermal

StepLanguageWordMeaning
1EnglishthermalA column of rising air in the lower atmosphere...
2Frenchthermalthermal
3New Latinthermalis
4Ancient GreekΘέρμηTherma, Macedonia, Greece
5Proto-Indo-Europeangʷʰer-warm, hot
6Proto-Indo-Europeangʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr

via English dia

StepLanguageWordMeaning
1EnglishdiaA language spoken in Sandaun Province, Papua New Guinea
Every word from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗrEvery word from Proto-Indo-European gʷʰer-Every word from Ancient Greek Θέρμη
diathermal — Etymology, Origin & Word History | Etymology Explorer