Where does “poxtos” come from?

poxtos (Proto-Brythonic) comes from Proto-Celtic kʷoxtos, from Proto-Indo-European pekʷ-, from Proto-Indo-European h₃-ép-kʷ-.

Ancestry of “poxtos”, step by step

StepLanguageWordMeaning
1Proto-Celtickʷoxtoscooked, hot
2Proto-Indo-Europeanpekʷ-to cook; to ripen
3Proto-Indo-Europeanh₃-ép-kʷ-—
Every word from Proto-Indo-European h₃-ép-kʷ- →Every word from Proto-Indo-European pekʷ- →Every word from Proto-Celtic kʷoxtos →
poxtos — Etymology, Origin & Word History | Etymology Explorer