'Strontium' definitions:
Definition of 'strontium'
(from WordNet)
noun
A soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite [syn: strontium, Sr, atomic number 38]
Definition of 'Strontium'
From: GCIDE
- 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. [1913 Webster]
Definition of 'strontium'
From: Elements
- Symbol: Sr
- Atomic number: 38
- Atomic weight: 87.62
- Soft yellowish metallic element, belongs to group 2 of the periodic table. Highly reactive chemically. Sr-90 is present in radioactive fallout and has a half-life of 28 years. Discovered in 1798 by Klaproth and Hope, isolated in 1808 by Humphry Davy.