Where does “photohydrothermal” come from?

photohydrothermal (English) comes from English photo, from English photography, from French photographie, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-.

photohydrothermal (English): That employs a beam of light and hot water

Definitions

  1. That employs a beam of light and hot water

Ancestry of “photohydrothermal”, step by step

photohydrothermal traces back through two separate lines of ancestry.

via English photo

StepLanguageWordMeaning
1EnglishphotoA photograph; A photo finish; To take a...
2EnglishphotographyThe art and technology of producing images on...
3Frenchphotographiephotography; photograph
4Ancient Greekφωτο-
5Ancient GreekφῶςAttic form of φᾰ́ος
6Proto-Hellenicpʰáos
7Proto-Indo-Europeanbʰéh₂os
8Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
9Proto-Indo-Europeanbʰeh₂-s-ri-

via English hydrothermal

StepLanguageWordMeaning
1EnglishhydrothermalOf, or relating to hot water; Of or relating to...
2EnglishthermalA column of rising air in the lower atmosphere...
3Frenchthermalthermal
4New Latinthermalis
5Ancient GreekΘέρμηTherma, Macedonia, Greece
6Proto-Indo-Europeangʷʰer-warm, hot
7Proto-Indo-Europeangʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr
Every word from Proto-Indo-European bʰeh₂-s-ri-
photohydrothermal — Etymology, Origin & Word History | Etymology Explorer