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.

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]

phosphorus

/phos·pho·rus/ (P) (fos´fah-rus) chemical element, at. no. 15. Ingestion or inhalation produces toothache, phosphonecrosis (phossy jaw), anorexia, weakness, and anemia. 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 occurs in all tissues, being involved in almost all metabolic processes.phos´phorousphosphor´ic
phosphorus 32  a radioisotope of phosphorus having a half-life of 14.28 days and emitting beta particles (1.71 MeV); therapeutic uses include treatment of polycythemia vera, chronic myelocytic leukemia, chronic lymphocytic leukemia, and certain ovarian and prostate carcinomas, palliation of metastatic skeletal disease, and treatment of intraperitoneal and intrapleural malignant effusions.

phosphorus (P)

[fos′fərəs]
Etymology: Gk, phos, light, pherein, to bear
a nonmetallic chemical element occurring extensively in nature as a component of phosphate rock. Its atomic number is 15; its atomic mass is 30.975. Phosphorus forms a series of sulfides used commercially in the manufacture of matches. It can be prepared in yellow or white, red, and black allotropic forms. Phosphorus is essential for the metabolism of protein, calcium, and glucose. The body uses phosphorus in its combined forms, which are obtained from such nutritional sources as milk, cheese, meat, egg yolk, whole grains, legumes, and nuts. A nutritional deficiency of phosphorus can cause weight loss, anemia, and abnormal growth. Phosphorus is essential to the body for the production of adenosine triphosphate and for the process of glycolysis. Elemental white or yellow phosphorus is extremely poisonous and produces severe GI irritation. If ingested, it can produce hemorrhage, cardiovascular failure, and death. Chronic poisoning by phosphorus is characterized by anemia, cachexia, bronchitis, and necrosis of the mandible. Normal adult blood levels of phosphorus are 3 to 4.5 mg/dL or 0.97 to 1.45 mmol/L (SI units).

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.

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]

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]

phosphorus (P) (fos´fərus),

n a nonmetallic element; atomic weight, 30.98. It is essential, as is the phosphate, for the mineralization of the organic matrix of teeth and bone. It is also essential in the intermediary metabolism of carbohydrates as a vital constituent of the various intermediary compounds (e.g., glucose 6-phosphate) and of the enzyme systems (e.g., adenosine triphosphate [ATP]).

phosphorus

a chemical element, atomic number 15, atomic weight 30.974, symbol P. See Table 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.

phosphorus-32
a radioisotope of phosphorus having a half-life of 14.3 days and emitting only beta rays; used in the form of sodium phosphate P-32 for treatment of polycythemia vera, chronic myelocytic leukemia and chronic lymphocytic leukemia, and in localizing certain tumors during surgery. Symbol 32P.
calcium:phosphorus ratio
see calcium: phosphorus ratio.
inorganic phosphorus
any phosphorus-containing compound which does not also contain carbon.
phosphorus nutritional deficiency
causes rickets in the young and osteomalacia in adult ruminants. In less severe deficiency states there is pica, growth retardation, infertility and possibly retention of placenta. See also postparturient hemoglobinuria. An unlikely nutritional deficiency in carnivores.
phosphorus poisoning
is very rare because of the absence of elemental phosphorus from the environment. Causes severe gastroenteritis with vomiting and diarrhea. If the animal survives the gastroenteritis there is a subsequent acute hepatic insufficiency.
phosphorus restriction
indicated in the dietary management of chronic renal disease and secondary hyperaparathyroidism; in dogs and cats, usually accomplished by reducing the content of meat.
phosphorus supplements
supplementing the diets of animals exposed to phosphorus deficient feeds is usually achieved by feeding bone meal, or calcium or sodium phosphates. All are readily assimilable but none are palatable and special devices are often necessary to get animals to take required amounts. See also dietary phosphate.