Fusion
noun, verbal noun, の adjective
Dissolve and then join together again to create a reaction, a fusion reaction.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
俺たちのバンドは、ジャズとロックが融合した音楽を演奏しています。
Our band plays music that is a fusion of jazz and rock.