QUADRUPLEX Meaning of QUADRUPLEX in English quadruplex BrE AmE ˈkwɒdr u pleks -ə-; kwɒ ˈdruːp leks AmE \ ˈkwɑːdr ə pleks kwɑː ˈdruːp leks Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012