This is the 504th most frequent Italian word.
partecipazione
Participation.
In this sentence, "partecipazione" means "invitation," specifically to an event such as a wedding.
Abbiamo ricevuto una partecipazione al matrimonio davvero elegante.
We received a very elegant wedding invitation.
Here, "partecipazione" again refers to "participation," focusing on the involvement of individuals in a collective activity.
La partecipazione di tutti gli studenti alla lezione è stata molto attiva.
The participation of all students in the lesson was very active.
The word "partecipazione" here means "participation," referring to someone's involvement in an activity or project.