A miniseries (also mini-series) is a television show production which tells a single story in a limited number of episodes. The number of episodes is variable; however, they are usually limited to fewer than a whole season (13 weeks).
Before the invention of this term in the USA, such a production was always known as a "serial". The use of the term "miniseries" is still generally limited to North America. Various British television productions dating from the 1950s onwards fit the definition of miniseries, but in Britain these are referred to as "serials".