The phrase "unique fusion" means something that is a special combination of different things, making it one-of-a-kind or unlike anything else. Full definition
Unique fusion of a top down shooter and tower defense strategy. (co-optimus.com)
Hoi An is also teeming with expat - owned restaurants and bistros, serving western favourites, French pastries, homemade ice cream, and even unique fusion dishes. (vietnam-guide.com)
Consider his interactions with the Working Families Party, a homegrown New York third party of unions and liberal groups that, because of the state's unique fusion voting system, has become an electoral powerhouse over the past decade. (politico.com)