QUADRUPLET Meaning of QUADRUPLET in English quad ‧ ru ‧ plet /ˈkwɒdrʊplət, ˈkwɒdrʊplɪt $ kwɑːˈdruːp-/ BrE AmE noun [countable] one of four babies born at the same time to the same mother SYN quad Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012