fusor UK /ˈfjuːzə/US /ˈfjuːzɚ/ noun3 •An electrostatic inertial confinement fusion apparatus. A device that causes nuclear fusion through electrostatic field compression of the fusion fuel. •A celestial body that, through self-gravity, is able to perform nuclear fusion within its core, at any point in its life. These include stars, stellar remnants, and brown dwarfs. •A coin melter. formsfusors