(physics) A minor stable isotope of chromium, ⁵⁴₂₄Cr, having 24 protons and 30 neutrons; it amounts to about 2% of the element in nature

present participle of chromium plate

The application of a layer of chromium onto the surface of a metal

(inorganic chemistry) Group 6 of the periodic table, comprising chromium, molybdenum, tungsten and seaborgium