from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A soft, silvery, easily oxidized metallic element that ignites spontaneously in air when finely divided. Strontium is used in pyrotechnic compounds and various alloys. Atomic number 38; atomic weight 87.62; melting point 769°C; boiling point 1,384°C; specific gravity 2.54; valence 2. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A metallic chemical element (symbol Sr) with an atomic number of 38.
from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. Chemical symbol, Sr; atomic weight, 87.37; specific gravity, 2.54. A dark-yellow metal, less lustrous than barium, malleable, and fusible at a red heat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
From New Latin strontia, strontium oxide, from English strontian; see strontianite.(American Heritage® Dictionary of the English Language, Fourth Edition)
Named in a pseudo-Latin manner for the name of the Scottish town Strontian. (Wiktionary)