| pyroglutamate hydrolase | <enzyme> Hydrolyzes pyroglutamic acid in the presence of ATP to glutamate plus ADP and inorganic phosphate. Deficiency leads to pyroglutamic acidurea. Registry number: EC 3.5.2.- (12 Dec 1998) |
|---|---|
| pyroglutamic acid | A keto derivative of proline that is formed nonenzymatically from glutamate, glutamine, and gamma-glutamylated peptides; it is also produced by the action of gamma-glutamylcyclotransferase; elevated levels of 5-oxoproline are often associated with problems of glutamine or glutathione metabolism. Synonym: 5-pyrrolidone-2-carboxylic acid, pyroglutamic acid, pyrrolidone-5-carboxylate. (05 Mar 2000) |
| pyroglutamyl-peptidase I | <enzyme> An enzyme that catalyses the release of a n-terminal pyroglutamyl group from a polypeptide provided the next residue is not proline. It is inhibited by thiol-blocking reagents and occurs in mammalian tissues, microorganisms, and plants. Registry number: EC 3.4.19.3 (12 Dec 1998) |
| pyrognostic | <chemistry> Of or pertaining to characters developed by the use of heat; pertaining to the characters of minerals when examined by the use of the blowpipe; as, the pyrognostic characters of galena, the degree of fusibility, flame colouration, etc. Origin: Pyro- + Gr. To know. Source: Websters Dictionary (01 Mar 1998) |
| pyrography | <technique> A process of printing, ornamenting, or carving, by burning with heated instruments. Source: Websters Dictionary (01 Mar 1998) |
| pyrolagnia | Sexual gratification from setting fires. Origin: pyro-+ G. Lagneia, lust (05 Mar 2000) |
| pyroligneous | Relating to or produced by the dry distillation of wood. Origin: pyro-+ L. Lignum, wood (05 Mar 2000) |
| pyroligneous alcohol | CH3OH;a flammable, toxic, mobile liquid, used as an industrial solvent, antifreeze, and in chemical manufacture; ingestion may result in severe acidosis, visual impairment, and other effects on the central nervous system. Synonym: carbinol, methanol, pyroligneous alcohol, pyroligneous spirit, pyroxylic spirit, wood alcohol, wood naphtha, wood spirit. (05 Mar 2000) |
| pyroligneous vinegar | Pyracetic acid;impure acetic acid produced by the destructive distillation of pine tar and wood. Synonym: pyroligneous vinegar. (05 Mar 2000) |
| pyrolignic | <chemistry> Pertaining to, or designating, the acid liquid obtained in the distillation of wood, consisting essentially of impure acetic acid. Origin: Pyro-+ L. Lignum wood: cf. F. Pyroligneux. Source: Websters Dictionary (01 Mar 1998) |
| pyrolithic | <chemistry> Same as Pyrouric, or Cyanuric. Source: Websters Dictionary (01 Mar 1998) |
| pyrologist | One who is versed in, or makes a study of, pyrology. Source: Websters Dictionary (01 Mar 1998) |
| pyrology | <study> That branch of physical science which treats of the properties, phenomena, or effects of heat; also, a treatise on heat. Origin: Pyro-: cf. F. Pyrologie. Source: Websters Dictionary (01 Mar 1998) |
| pyrolusite | <chemical> Manganese dioxide, a mineral of an iron-black or dark steel-gray colour and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name). Origin: Pyro- + Gr. To loose, or a loosing. Source: Websters Dictionary (01 Mar 1998) |
| pyrolysis | The thermal decomposition of biomass at high temperatures (greater than 400> F, or 200> C) in the absence of air. The end product of pyrolysis is a mixture of solids (char), liquids (oxygenated oils), and gases (methane, carbon monoxide, and carbon dioxide) with proportions determined by operating temperature, pressure, oxygen content, and other conditions. (05 Dec 1998) |