Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to phosphorus-32: chromium-51, thallium-201


A radioactive beta-emitting isotope of phosphorus having a half-life of 14.3 days and used as a tracer in studies of the metabolism of nucleic acids and phospholipids, and also used in the treatment of certain diseases of the osseous and hematopoietic systems.


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.

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.
References in periodicals archive ?
Wang, "Treatment of cystic craniopharyngioma with phosphorus-32 intracavitary irradiation," Child's Nervous System: ChNS, vol.
Sealed patches containing radioactive phosphorus-32 that deliver beta radiation to the cancer site were custom-made according to the shape and size of each patient's skin cancer lesions.
s vice president and co-inventor stated, "Ours is a chemically bonded radioactive surface in which the pure beta-radiation emitter phosphorus-32 is conformally distributed on the stent or alternatively confined to the distal ends, for example, to produce a more selective and localized source of healing radiation.
Patent 5,976,492 describes new methods of linking phosphorus-32 and phosphorus-33 to diverse disease-targeting proteins, such that they retain the ability to bind to abnormal cells.