Crossword clues for strontium
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
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.
Douglas Harper's Etymology Dictionary
light metallic element, 1808, coined in Modern Latin by English chemist Sir Humphry Davy (1778-1829) from Strontian, name of a parish in Argyllshire, Scotland, the site of lead mines where strontium was first found, in 1787.
Wiktionary
n. A metallic chemical element (''symbol'' Sr) with an atomic number of 38.
WordNet
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]
Wikipedia
Strontium is a chemical element with symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when it is exposed to air. Strontium has physical and chemical properties similar to those of its two vertical neighbors, calcium and barium. It occurs naturally in the minerals celestine, strontianite, and putnisite, and is mostly mined from the first two of these. While natural strontium is stable, the synthetic Sr isotope, present in radioactive fallout, is radioactive and has a half-life of 28.90 years: this is one of the most dangerous components of fallout, as strontium mimics its vertical neighbor calcium and is similarly taken up by the body. Natural stable strontium, on the other hand, is not dangerous to health.
Both strontium and strontianite are named after Strontian, a village in Scotland near which the mineral was discovered in 1790 by Adair Crawford and William Cruickshank; it was identified as a new element the next year from its crimson-red flame test color. Strontium was first isolated as a metal in 1808 by Humphry Davy using the then-newly discovered process of electrolysis. The production of sugar from sugar beet was in the 19th century the largest application of strontium (see strontian process). At the peak of production of television cathode ray tubes, as much as 75 percent of strontium consumption in the United States was used for the faceplate glass. With the displacement of cathode ray tubes by other display methods, consumption of strontium has dramatically declined.
Strontium is a chemical element.
Strontium may also refer to:
- Strontium Dog, a British science fiction comic series
- Strontium Technology, a Singaporean manufacturing company
- Strontium unit, a unit used to measure the amount of radioactivity from strontium-90
Usage examples of "strontium".
The solution contains the barium as baric chloride mixed, perhaps, with salts of strontium or lime.
In the absence of baryta or lime it is filtered off, and weighed as strontium carbonate, which contains 70.
Electricity produced by radioactive isotopes, strontium go, polonium zro, by thermoelectric energy conversion.
Oxford Thermoluminescence Laboratory for analysis, using a new strontium technique which can fix the date of firing with even greater accuracy.
Sunset Boulevard, with a scalp rich in astroturf, a mouthful of cobalt and Strontium 90 and a million bucks of computerized courting-tackle, this bionic bullybag nestling between my thighs.
I must look, him in his sneakers and strontium rompers and flyaway hair, me with my butch suit, thin jekylls and proud-rounded shoes.
Drosera, 5 Spectroscope, its power compared with that of Drosera, 170 Starch, action of, on Drosera, 78, 126 Stein, on Aldrovanda, 321 Strontium, salts of, action on Drosera, 183 Strychnine, salts of, action on Drosera, 199 Sugar, solution of, action of, on Drosera, 78 , , inducing aggregation in Drosera, 51 Sulphuric ether, action on Drosera, 219 , on Dionaea, 304 Syntonin, its action on Drosera, 102 T.
By now, other chelates existed which had special affinities for iodine, cesium, strontium, calcium.
We study the mutation rate of Clethrionomys glareolus, whom you'll meet, and sample the dose rates of cesium and strontium from a variety of mammals.
If he knows facts-that ash with a high strontium content probably came from a highway flare, thatfaca is Portuguese for knife, that Ethiopian diners use no utensils and eat with their right hands exclusively, that a slug with five land-and-groove rifling marks, right twist, could not have been fired by a Colt pistol-if he knows these things he may just make the connection that places an unsub at the crime scene.
On the other hand, the leaves which had been immersed in the solutions of the chloride of rubidium and magnesium, of acetate of strontium, nitrate of barium, and citric acid, were quickly acted on by the phosphate.
There were bombs of iron, calcium, sodium, helium, hydrogen, sulphur, potassium, magnesium, copper, chromium, strontium, barium, zinc: elements that had all been ancientily revealed in the solar spectrum.
The planet was seeded with enough strontium 90 to wipe out the entire biosphere.
You can eat or drink radioactive matter, like strontium 90 in milk.
The house-to-car therapist takes me by the hand and I'm off, sailing down Sunset Boulevard, with a scalp rich in astroturf, a mouthful of cobalt and Strontium 90 and a million bucks of computerized courting-tackle, this bionic bullybag nestling between my thighs.