Where does “preciosíssimo” come from?

preciosíssimo (Portuguese) comes from Portuguese precioso, from Old Portuguese precioso, from Latin pretiōsus, from Latin pretium, from Proto-Italic pretjom, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “preciosíssimo”, step by step

StepLanguageWordMeaning
1Portuguesepreciosoprecious
2Old Portugueseprecioso—
3Latinpretiōsusvaluable, precious
4Latinpretiumworth, price, value, cost; pay, hire, wage,...
5Proto-Italicpretjom—
6Proto-Indo-Europeanper-before, in front; first; to go through
7Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Italic pretjom →