Definition
Meaning of 'strontium'
Meaning of 'strontium' (Webster Dictionary)
1. Strontium 
[ n.]
- A metallic element of the calcium group, always
naturally occurring combined, as in the minerals strontianite,
celestite, etc. It is isolated as a yellowish metal, somewhat malleable
but harder than calcium. It is chiefly employed (as in the nitrate) to
color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3. [ n.]- A radioactive isotope of strontium produced by certain nuclear reactions, and constituting one of the prominent harmful components of radioactive fallout from nuclear explosions; also called radiostrontium. It has a half-life of 28 years.
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