noun (plural -gies) Etymology: Greek trilogia, from tri- + -logia -logy Date: circa 1661 a series of three dramas or literary works or sometimes three musical compositions that are closely related and develop a single theme
TRILOGY
Meaning of TRILOGY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012