phosphorus

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phosphorus

 (P) [fos´for-us]
a chemical element, atomic number 15, atomic weight 30.974. (See Appendix 6.) Phosphorus is an essential element in the diet; in the form of phosphates it is a major component of the mineral phase of bone and is involved in almost all metabolic processes. It also plays an important role in cell metabolism. It is obtained by the body from milk products, cereals, meat, and fish, and its use by the body is controlled by vitamin D and calcium.

Free phosphorus is very inflammable and exceedingly poisonous; ingestion causes fatty degeneration of the liver and other viscera. Inhalation of its vapor by workers in chemical industries may cause necrosis of the mandible (phosphonecrosis). adj., adj phosphor´ous.
phosphorus 32 a radioisotope of phosphorus having a half-life of 14.28 days and emitting only beta particles, used as a radiopharmaceutical. As the sodium salt its therapeutic uses include treatment of polycythemia vera, chronic granulocytic leukemia, chronic lymphocytic leukemia, and palliation of metastatic skeletal disease. As a colloid with chromium its uses include treatment of certain ovarian and prostate carcinomas and of intraperitoneal and intrapleural malignant effusions resulting from metatstatic disease. Symbol 32P.
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·pho·rus (P),

(fos'fō-rŭs), Do not confuse this word with phosphorous.
A nonmetallic chemical element, atomic no. 15, atomic wt. 30.973762, occurring extensively in nature, always in compounds such as phosphates and phosphites and as the phosphate in every living cell; the elemental form is extremely poisonous, causing intense inflammation and fatty degeneration; repeated inhalation of phosphorus fumes may cause necrosis of the jaw (phosphonecrosis); the approximate fatal dose is 50-100 mg.
[G. phosphoros, fr. phōs, light, + phoros, bearing]
Farlex Partner Medical Dictionary © Farlex 2012

phosphorus

A nonmetallic element (atomic number 15, atomic weight 30.97) which is a principal intracellular anion. Phosphorus plays key roles in biochemical synthesis, storage and use of energy in cells through the formation of high-energy phosphate bonds; it is intimately linked to the regulation of calcium levels, carbohydrate, lipid and acid-base metabolism. Phosphorus is essential to bone and tooth formation; 85% of the body’s phosphorus and phosphates are stored in bone.

Dietary source
Dairy, fish, legumes, meats, nuts, poultry, whole grains.

Phosphorus

Homeopathy
A homeopathic remedy formulated from phosphorus used for anaemia, circulatory defects, fatigue, gastrointestinal (nausea due to food poisoning) and respiratory (asthma, bronchitis, pneumonia) tract complaints, burning chest pains, gastritis, haemorrhage, insomnia, menstrual dysfunction, nasal polyps, nosebleeds and tension.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

phos·pho·rus

(fos'fŏr-ŭs)
A nonmetallic chemical element, atomic no. 15, atomic wt. 30.973762, occurring extensively in nature, always in chemical combination; the elemental form is extremely poisonous, causing intense inflammation and fatty degeneration; repeated inhalation of phosphorus fumes may cause necrosis of the jaw (phosphonecrosis).
[G. phosphoros, fr. phōs, light, + phoros, bearing]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

phos·pho·rus

(fos'fŏr-ŭs)
A nonmetallic chemical element, occurring extensively in nature; the elemental form is extremely poisonous, causing intense inflammation and fatty degeneration; repeated inhalation of phosphorus fumes may cause necrosis of the jaw (phosphonecrosis).
[G. phosphoros, fr. phōs, light, + phoros, bearing]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The preparation of microencapsulated red phosphorus particles by rapid expansion of supercritical solution (RESS) with the new nozzle
Red phosphorus can be found at the end of every matchstick in your house, and also in road flares.
The product is currently UL-recognized only in black formulations, but the company says its FR formulation is expected to provide a broader range of colourability than brominated FR systems and non-halogenated ones based on red phosphorus which typically permit only dark colours.
* Technyl A 60G2 V30 is said to have excellent all-around flammability performance and contains no halogen, red phosphorus, or antimony oxide.
Abstract A novel process of preparing microencapsulated red phosphorus particles by rapid expansion of supercritical fluids (RESS) was tested, in which a new kind of nozzle and supercritical [CO.sub.2] as a solvent were used.
"The indictment states that selling red phosphorus is punishable by up to 20 years in prison and selling iodine crystals can get you 10 years.
The nucleated, heat-stabilized, semicrystalline 6/6 polyamide is formulated without heavy metals or red phosphorus and is halogen-free.
The indictment alleges the couple sent enough red phosphorus and iodine chemicals to make 635 kilos of crystal meth.
These include new Masteret line of melamine cyanurate, melamine/borate and melamine polyphosphate flame-retardant additives for use in thermoplastics, as well as Safest red phosphorus flame-retardant masterbatches for glass-filled nylon and PP.
Only small amounts are needed to achieve a flame-retardant classification of UL94 V-0 or a Glow Wire Flammability Index of 960[degrees]C, amounts well below those required by other systems, with the exception of red phosphorus, according to the company.
Crank's typical ingredients include cat tranquilliser, car starter fluid, drain cleaner, paint remover and red phosphorus - commonly found on the strike pads of matchbooks.