threequel

1. (narratology) The chronologically third part of any series of works, especially a movie trilogy.Examples: "When last seen, the “Poseidon” had been blown into small pieces. With any luck, this means Mr. Allen can’t possibly make a threequel."; "On the contrary, last summer saw two jocular parodies of 1970’s blaxploitation films: the minor hit Undercover Brother and Beyonce Knowles’s portrayal of Foxxy Cleopatra, a character in the Austin Powers “threequel.”"; "This may be the year of the threequel, but not all the franchises will be successful, predicts Mr. Gray."Synonyms: trequel