Where does “phthoric” come from?

phthoric (English) comes from English phthor, from Ancient Greek φθορά, from Ancient Greek φθείρω, from Proto-Hellenic kʷʰtʰéřřō, from Proto-Indo-European dʰgʷʰér-ye-ti, from Proto-Indo-European dʰgʷʰer- — flow, diverge; perish.

phthoric (English): Relating to fluorine

Definitions

  1. Relating to fluorine

Ancestry of “phthoric”, step by step

phthoric traces back through two separate lines of ancestry.

via English phthor

StepLanguageWordMeaning
1Englishphthorfluorine
2Ancient Greekφθοράdestruction, ruin; passing out of existence,...
3Ancient GreekφθείρωI destroy; I ruin, spoil
4Proto-Hellenickʷʰtʰéřřō
5Proto-Indo-Europeandʰgʷʰér-ye-ti
6Proto-Indo-Europeandʰgʷʰer-flow, diverge; perish

via English ic

StepLanguageWordMeaning
1Englishicrelated or pertaining to; having the character of
Every word from Proto-Indo-European dʰgʷʰer-Every word from Proto-Indo-European dʰgʷʰér-ye-tiEvery word from Proto-Hellenic kʷʰtʰéřřō