Hypertext Webster Gateway: "strontium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Strontium \Stron"ti*um\, n. [NL. See {Strontia}.] (Chem.)
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.
From WordNet (r) 1.7 (wn)
strontium
n : a soft silver-white or yellowish metallic element of the
alkali metal group; turns yellow in air; occurs in
celestite and strontianite [syn: {Sr}, {atomic number 38}]
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