In a single round-robin schedule, each participant plays every other participant once. If each participant plays all others twice, this is frequently called a double round-robin. The term is rarely used when all participants play one another more than twice, and is never used when one participant plays others an unequal number of times
Let's say a tournament is held during 10 days and an entire round fits in one week exactly, no more and no less. With round I am referring to an entire cycle where each team plays every other once. The next round cannot be completed because of time constraints so there is only 3 days to organize a partial round where each teams plays a second match against some of the other teams but not all. So this is neither a single round-robin schedule nor a double round-robin one, but something in between. So what do you call it?
And what do you call it when each team plays the other 3 times or more? And more instances of unequal number of teams?