Meaning of CHROMIUM in English
(Cr), chemical element of Group VIb of the periodic table, a hard, steel-gray metal that takes a high polish and is used in alloys to increase strength and corrosion resistance. Chromium was discovered (1797) by the French chemist Nicolas-Louis Vauquelin and isolated as the metal a year later; it was named for its multicoloured compounds. The green colour of emerald, serpentine, and chrome mica and the red colour of ruby are due to chromium.
Britannica English vocabulary. Английский словарь Британика. 2012