Definition of "four-part" []

• In music, having four voices or parts in the harmony.

The Century Dictionary (Public Domain)

• "The four-part series 100 Hollywood Crimes, Misdemeanors & Dirty Deeds will examine famous tragedies like the Black Dahlia murder and the slaying of Sharon Tate, the sex scandals of Roman Polanski and Hugh Grant, and even the more minor crimes that have landed starlets like Paris Hilton and Winona Ryder in hot water."
• "With a dozen or so other young people aged from 10 to 26 from Hackney, Becker agreed to review for the Observer the new four-part Channel 4 drama Top Boy, which starts tomorrow."
• "Last week, in a four-part series that aired on MORNING EDITION, NPR counterterrorism correspondent Dina Temple-Raston examined the lives of several young men raised on American soil who played key roles in or for terrorist organizations."