The phrase "metal core" refers to a type of music that combines the aggressive sound and heavy guitar riffs of metal with the intensity and emotion often found in hardcore punk. Full definition
That could explain why its dense metal core makes up a whopping two - thirds of its total mass. (newscientist.com)
Scientists think Psyche could be what's left of an exposed metal core of a planet very similar to Earth. (newsweek.com)
A ligand is a molecule that binds to metal atoms to form metal cores that are stabilized by a shell of ligands, and so understanding how they contribute to nanoparticle stabilization is essential to any process of nanoparticle application. (sciencedaily.com)