Fusion is the process of joining two or more things together into one. In physics, it especially means joining atomic nuclei to release huge amounts of energy, like in the sun.
“Fusion” comes from Latin “fusio,” meaning “a pouring or melting,” from “fundere,” meaning “to pour or melt.” It first referred to melting substances together before being used for atomic processes.
Every ray of sunlight is powered by nuclear fusion happening millions of times per second inside the sun. Chefs and musicians borrowed the word to describe “fusion cuisine” and “jazz fusion,” where styles melt together just as dramatically as atoms do.
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