noun
Refers to something made by mixing different elements together; can be used for physical substances, abstract blends, or hybrid entities.
この合金は鉄とニッケルの混成物です。
This alloy is a mixture of iron and nickel.
彼の作品は和洋の混成物と言える。
His work can be called a hybrid of Japanese and Western styles.
Compound of 混成 (こんせい, 'mixing, blending') and 物 (ぶつ, 'thing, object'). The exact historical derivation is uncertain, but the word follows a standard Sino-Japanese compounding pattern.