Author: Glossary

  • Phosphorus poisoning

    Poisoning caused by the ingestion of substances containing yellow phosphorus, such as rat and roach poison. Before the introduction of safety matches (which contain no yellow phosphorus), phosphorus poisoning was quite common. Yellow phosphorus is also used in manufacturing fireworks and fertilizers.  

  • Phosphorous acid

    A crystalline acid formed when phosphorus is oxidized in moist air.  

  • Phosphorolysis

    The chemical reaction of incorporating phosphoric acid into a molecule.  

  • Phosphorism

    Chronic poisoning from phosphorus.  

  • Phosphoribosyltransferase

    An enzyme that catalyzes reconversion to the ribonucleotide stage of the purine bases, hypoxanthine and guanine. The deficiency of this enzyme is inherited as an X-linked trait.  

  • Phosphorescence

    The induced luminescence that persists after cessation of the irradiation that caused it; the emission of light without appreciable heat. After being stimulated by radiation of shorter wavelengths, like electrons, ultraviolet light, or x-rays, a fascinating phenomenon of light emission persists for a duration exceeding 10‾⁸ seconds. This mesmerizing display is commonly referred to as…

  • Phosphorated

    Impregnated with phosphorus.  

  • Rare earth phosphor

    An element such as yttrium, gadolinium, or lanthanum, that is used for ultra-high-speed radiographic intensification screens.  

  • Phosphor

    A substance in radiographic intensifying screens, fluoroscopic image intensifies, or other image receptors that convert photons of energy into light, thereby amplifying the image. Any substance exhibiting the properties of phosphorescence, fluorescence, or luminescence.  

  • Phosphopenia

    A deficiency of phosphorus in the body.