strontiumPronunciation: /ˈstrɒntɪəm, ˈstrɒnʃ(ɪ)əm/Definition of strontium noun [mass noun] the chemical element of atomic number 38, a soft silver-white metal of the alkaline earth series. Its salts are used in fireworks and flares because they give a brilliant red light. (Symbol: Sr)Origin: early 19th century: from strontia + -iumstrontium in other Oxford dictionaries Definition of strontium in the US English dictionary
