from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A natural, variously colored calcium fluoride phosphate, Ca5F(PO4)3, with chlorine, hydroxyl, or carbonate sometimes replacing the fluoride. It is a source of phosphorus for plants and is used in the manufacture of fertilizers.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A calcium fluoride phosphate of variable composition, sometimes used in the manufacture of fertilizer.
from the GNU version of the Collaborative International Dictionary of English
- n. Native phosphate of lime, occurring usually in six-sided prisms, color often pale green, transparent or translucent.
from The Century Dictionary and Cyclopedia
- n. Native calcium phosphate with calcium fluorid or chlorid, generally crystallized in hexagonal prisms, which are sometimes low or even tabular, sometimes elongated, and occasionally of great size.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus
And one of the properties of [hydroxy] apatite is that you can have supersaturated solutions of calcium and phosphate that can be maintained quite stably.
His team took a detailed look at a mineral within the basalt called apatite using an ion microprobe that can analyze grains much smaller than the width of a human hair.
The extent of processing the so-called apatite concentrate produced by your feedstock suppliers is not being regulated in any way.
On the large scale, mechanical arrangements are employed for mixing the materials, so as to economise labour, and mineral phosphates, such as apatite, can then be used with advantage.
Her LUXE designs are filled with precious and semi-precious gemstones such as apatite, iolite and hessonite delicately clustered with emerald, ruby and topaz.
Calcium links up with phosphates to make the chemical "apatite" (calcium phosphate), one of the hardest chemicals we know, which is what makes bones hard and stony, and tough.
"rock phosphate," a variety of apatite which is mainly phosphate of lime.
President Obama himself has faced a stinging rebuke from congress for his comments about lawmakers '"obsession" with the war, and the Out of Afghanistan Caucus continues to chip away at what little apatite for war remains in congress.
It's like criticizing the Roman Catholic belief because so many priests have an unhealthy apatite for young boys 'buttocks.
On the scale of organisms, bones contain phosphorus in apatite form and it's also an essential nutrient for plants, though P excess is as much a problem as its lack.