This is the 203rd most frequent Italian word.
partire
"Partire" means "to leave" or "to depart" in English.
In this sentence, 'partire' is used to express leaving or setting off towards a destination.
Parto per Roma domani mattina.
I'm leaving for Rome tomorrow morning.
Here, 'partire' is used to indicate the commencement or beginning of an event.
La corsa parte alle nove precise.
The race starts at nine sharp.
In this context, 'partire' metaphorically means to begin or start with a particular focus or emphasis.