- 1having three parts or involving three people or groups a triple heart bypass operation a triple alliance They're showing a triple bill of horror movies (= three horror movies one after the other).
- 2three times as much or as many as something The library will be triple the size of the existing main library. Its population is about triple that of St. Louis.
NAmE//ˈtrɪpli//
adverbSee triple in the Oxford Advanced Learner's DictionaryCheck pronunciation: triple