A series of three related works, particularly in literature, film, or music.

A set of three related events or actions.

तीन संबंधित घटनाओं या क्रियाओं का सेट

English Usage: The athlete's performance was part of a trilogy of competitions leading to the finals.

Hindi Usage: एथलीट का प्रदर्शन फाइनल की ओर ले जाने वाली प्रतियोगिताओं की त्रयी का हिस्सा था।