Definition of strontium noun from the Oxford Advanced American Dictionary

 

strontium

 noun
noun
NAmE//ˈstrɑntiəm//
 
, NAmE//ˈstrɑnʃiəm//
 
[uncountable](symbol Sr)
 
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a chemical element. Strontium is a soft silver-white metal.
See the Oxford Advanced Learner's Dictionary entry: strontium