Where does “portolan” come from?

portolan (English) comes from French portulan, from Italian portolano, from Medieval Latin portulanus, from Latin Portus, from Proto-Italic portus, from Proto-Indo-European pértus, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

portolan (English): A chart of European navigable waters based on...

Definitions

  1. A chart of European navigable waters based on...

Ancestry of “portolan”, step by step

StepLanguageWordMeaning
1Frenchportulan—
2Italianportolanoportolan
3Medieval Latinportulanus—
4LatinPortus” or, later, “Portus Rōmae”}} Portus large artificial harbour of Ancient Rome
5Proto-Italicportusharbour
6Proto-Indo-Europeanpértuscrossing
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pértus →