Where does “porh” come from?

porh (Middle Cornish) comes from Old Cornish porth, from Proto-Brythonic porθ, from Latin porta, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “porh”, step by step

StepLanguageWordMeaning
1Old Cornishporth—
2Proto-Brythonicporθdoor, gate, gateway
3Latinportagate, especially of a city; entrance, passage,...
4Proto-Indo-Europeanper-before, in front; first; to go through
5Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Latin porta →