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any salt or ester of phosphoric acid. adj., adj phosphat´ic.

Phosphates are widely distributed in the body, the largest amounts being in the bones and teeth. They are continually excreted in the urine and feces and must be replaced in the diet. Inorganic phosphates function as buffer salts to maintain the acid-base balance in blood, saliva, urine, and other body fluids. The principal phosphates in this buffer system are monosodium and disodium phosphate. Organic phosphates, in particular adenosine triphosphate (ATP), take part in a series of reversible reactions involving phosphoric acid, lactic acid, glycogen, and other substances, which furnish the energy expended in muscle contraction. This is thought to occur through the hydrolysis of the so-called high-energy phosphate bond present in ATP, phosphocreatine, and certain other body compounds.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

phos·phate (P),

A salt or ester of phosphoric acid. For individual phosphates not listed here, see under the name of the base.
Farlex Partner Medical Dictionary © Farlex 2012


1. A salt or ester (especially inorganic) of phosphoric acid.
2. The trivalent ion, PO43-.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


any salt or ester of any PHOSPHORIC ACID.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005


An organic compound necessary for mineralization of bone and other key cellular processes.
Mentioned in: Hyperparathyroidism
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Some studies have also shown that inorganic phosphate correlates with a higher risk of mortality among people with kidney disease.
van't Riet, "Inorganic phosphate accumulation and cadmium detoxification in Klebsiella aerogenes NCTC 418 growing in continuous culture," Applied and Environmental Microbiology, vol.
By breaking this bond using carbon-phosphorus lyase (CP-lyase), they release the inorganic phosphate that is critical to life.
Even though by a numb er of experiments, the sound properties of citric acid in fish diet without inorganic phosphate supplementation have been studied (Pandey and Satoh, 2008; Adrian et al., 2012).
For inorganic phosphate determination, the reaction was stopped by the addition of 0.2 mL of 10 % trichloroacetic acid and the molybdate color reaction was performed according to Black and Jones method [19] which was started by the addition of 0.5mL mixture (composed of 0.2ml of 2 % ammonium molybdate and 0.3mL of 14 % ascorbic acid in 50 % trichloroacetic acid).
Effect of cationic (CTABr) detergent on the rate of hydrolysis of bis-[micro]MPPE in presence ofhydroxide ion has been measured spectrophotometrically by the rate of appearance of inorganic phosphate (Kumar and singh, 2011) (Table 1) and rate increases sharply at CTABr concentration greater than the critical micelle concentration (CMC) for CTABr at pH-9.0 in 2.5 x [10.sup.-3] mol/[dm.sup.3] borate buffer CMC = 80 x [10.sup.-3] M determined by dye method (Jaks el al., 2010; Duynstee and Grunward, 1959).
The predominance of Fe-P is possibly due to sorption of inorganic phosphate by Fe and Al oxides in weathered tropical soils.
(2008) also reported in their studies that inorganic phosphates in the culture medium can be involved in the various cellular metabolic activities e.g.
We found that in the original nutrient medium with peptone content of 17 g/l and inorganic phosphate of 0.3 g/l, the enzyme activity and productivity of the recombinant strain B.
Disorders of calcium metabolism are usually associated with alterations of phosphorus (as inorganic phosphate).
0.1 ml of each dilution was spread on National Botanical Research Institute Phosphate (NBRIP) agar growth medium [5] containing: (Glucose 5 g, Mg[Cl.sub.2].6[H.sub.2]O 5 g, MgS[O.sub.4].7[H.sub.2]O 0.25 g, KCl 0.1 g, [(N[H.sub.4]).sub.2]S[O.sub.4] 0.1 g, agar 15 g, dissolved in 1 L of distilled water supplemented by 5 g of Tricalcium Phosphate (TCP) as sole of phosphorus source that have the ability to releases soluble inorganic phosphate from TCP.
On initial measurement the patient's serum inorganic phosphate was markedly increased, but the calcium concentration was within the reference interval.