Where does “katothermal” come from?

katothermal (English) comes from English kato-, from Greek κάτω, from Ancient Greek κατά, from Ancient Greek καταστερίζω, from Ancient Greek ἀστήρ, from Proto-Hellenic astḗr, from Proto-Indo-European h₂stḗr, from Proto-Indo-European h₂eHs- — to be/become dry; to burn, to glow; hearth.

katothermal (English): Having an increasing temperature with increasing water depth

Definitions

  1. Having an increasing temperature with increasing water depth

Ancestry of “katothermal”, step by step

StepLanguageWordMeaning
1Englishkato-downwards, below
2Greekκάτωdown; below; beneath
3Ancient Greekκατά
4Ancient Greekκαταστερίζωto place among the stars; I put among the stars
5Ancient Greekἀστήρa celestial body; illustrious person; starfish
6Proto-Hellenicastḗrstar
7Proto-Indo-Europeanh₂stḗrstar
8Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth
Every word from Proto-Indo-European h₂eHs-Every word from Proto-Indo-European h₂stḗrEvery word from Proto-Hellenic astḗr