pyo-
(paɪəʊ)
before a vowel py-, repr. Gr. πυο-, combining form of πύον pus; used to form medical and pathological terms. pyoˈcoccal a. [Gr. κόκκος grain], pertaining to the ‖ pyoˈcoccus, a microbe or coccus causing suppuration. ‖ pyoˈcœlia [Gr. κοιλία cavity], the presence of pus in the abdominal cavity (Dunglison 1853). pyˈoctanin(e [Gr. κτείνειν to kill], name given to methyl violet from its alleged power of checking suppuration. pyoˈcyanine (also -in) [cyanin], a blue colouring matter, 5-methyl-9-oxo-5, 9-dihydrophenazine, C13H10N2O, obtained from blue or lead-coloured pus; so pyocyˈanic a. ˈpyocyst, an encysted collection of pus, esp. in the lung. pyoˈderma, pyodermia; pyoˈdermic a. [dermic], of or pertaining to ‖ pyoˈdermia, a purulent state of the skin. ‖ pyodiˈathesis, a purulent diathesis. ‖ pyœˈdema [œdema], œdema caused by purulent infiltration (Dunglison 1853). pyoˈgenesis, the formation of pus, suppuration; so pyogeˈnetic, pyoˈgenic adjs., of or pertaining to pyogenesis; producing pus. † pyoˈhæmia, = pyæmia (Dunglison 1842); hence † pyoˈhæmic a. = pyæmic (Syd. Soc. Lex. 1897). pyohæmoˈthorax, presence of pus and blood in the pleural cavities. ˈpyolymph, lymph containing pus corpuscles. ‖ pyometra (-ˈmiːtrə) [Gr. µήτρα womb]: see quot. pyoneˈphritis [nephritis], suppurative inflammation of the kidney; hence pyoneˈphritic a. ‖ pyoneˈphrosis [Gr. νεϕρός kidney: see -osis], the presence of pus in the kidney; hence pyoneˈphrotic a. ‖ pyoperiˈcardium, the presence or a collection of pus in the pericardium. ‖ pyophˈthalmia, production of pus in the eye (Dunglison 1853). ‖ pyopneumoperiˈcardium [pneumopericardium], the presence of pus together with air or gas in the pericardium. ‖ pyopneumoˈthorax [pneumothorax], the presence of pus and air in the pleural cavities; = pneumopyothorax. ‖ pyˈoptysis [Gr. πτύσις spitting], expectoration of pus (Dunglison 1842). ‖ pyoˈrrhœa [Gr. ῥοία flux], (also, U.S., -rrhea) discharge of pus; also, spec. (in full pyorrhœa alveolaris) a purulent inflammation of the tissues surrounding the teeth that results in shrinkage of the gums and loosening of the teeth. ‖ pyoˈsalpinx [Gr. σάλπιγξ a tube], the presence of pus in the Fallopian tube. ‖ pyoseptiˈcæmia, pyæmia together with septicæmia; hence pyoseptiˈcæmic a. ‖ pyoˈthorax [thorax], collection of pus in the pleural cavities. pyoˈxanthin, pyoˈxanthose [Gr. ξανθός yellow], a yellow colouring matter found with pyocyanin in blue suppuration.
| 1896 Allbutt's Syst. Med. I. 726 Potent also against the *pyococcal infections. |
| 1897 Ibid. III. 715 Due to the *pyococci contained in the sputum they swallow. |
| 1890 Lancet 11 Oct. 783/2 [He] has tried *pyoktanin, the new aniline antiseptic, in several cases of suppurative ear disease. 1891 Standard 2 Feb. 5/2 Experiments with solutions of methyl violet, also called pyoctanine, a new pigment manufactured at Darmstadt. |
| 1901 W. Osler Princ. & Pract. Med. (ed. 4) 163 The *pyocyanic disease..is an extremely interesting form of infection with bacillus pyocyaneus. |
| 1860 Chem. News II. 119/1 M. Fordos has..succeeded in extracting..blue matter to which he gives the name of *pyocyanine. 1866–8 Watts Dict. Chem. IV. 752 Pyocyanin crystallises in needles or in rectangular flakes. 1873 C. H. Ralfe Phys. Chem. 40 A blue colour is often noticed on the dry bandages and linen which have been in contact with pus; this is due to pyo-cyanin. 1947 Sci. News V. 90 Many bacteria in presence of certain organic substances, which they activate, reduce a molecule such as pyocyanine to its colourless leuco form. 1949 H. W. Florey et al. Antibiotics I. xii. 549 Pyocyanine, a substance which is now recognized to be bactericidal and to which pyocyanase probably owes some of its activity... This is the blue pigment to which ‘blue pus’, characteristic of infection by Ps[eudomonas] pyocyanea, owes its name. 1957 G. A. Swan in Swan & Felton Phenazines x. 176 Pyocyanine, the first phenazine compound discovered in nature. 1976 Ann. Rev. Microbiol. XXX. 247 The purified enzyme contains FAD, which functions when pyocyanine is the electron donor. |
| [1853 Dunglison Med. Lex., *Pyocystis, vomica.] 1858 Mayne Expos. Lex., Pyocystis, term for a cyst of pus, especially in the lung; a vomica: a pyocyst. |
| 1930 Arch. Dermatol. & Syphilol. XXI. 151 The case was presented simply as *pyoderma. 1930 Ibid. XXII. 655 The term ‘pyoderma’ denotes a purulent infection of the skin due to pyogenic organisms, ordinarily staphylococci. 1936 Ibid. XXXIII. 811 Pyodermas and ulcerations of the skin have been described under various names. 1974 Passmore & Robson Compan. Med. Stud. III. xix. 102/2 A rare skin lesion which is almost specific for ulcerative colitis and Crohn's disease is pyoderma gangrenosum; intra-epidermal bulla form and contain clear fluid which soon becomes milky and frankly purulent, but is sterile. |
| 1899 Allbutt's Syst. Med. VIII. 911 Certain other clinical forms of *pyodermia have received special names. |
| Ibid. 918 Impetiginous and other *pyodermic disorders. |
| 1858 Mayne Expos. Lex., *Pyodiathesis. |
| 1847 Todd's Cycl. Anat. IV. 116 The true doctrine of *Pyogenesis is a modification of that of ‘secretion’. 1896 Allbutt's Syst. Med. I. 55 note, Pyogenesis must not be confounded with inflammation. |
| 1858 Mayne Expos. Lex., Pyogeneticus,..*pyogenetic. 1896 Allbutt's Syst. Med. I. 70 The pyogenetic inflammation. 1897 Ibid. II. 86 Pyogenetic bacteria are as a rule present in varying numbers. |
| 1839–47 Todd's Cycl. Anat. III. 754/2 note, The *pyogenic membrane..lines the cavity of an abscess. 1861 N. Syd. Soc. Year-bk. Med. 137 On the Pyogenic or Suppurative Diathesis. 1896 Allbutt's Syst. Med. I. 73 Conditions of great virulence of the pyogenic microbes. |
| 1890 Cent. Dict., *Pyohemothorax; *Pyolymph. 1893 W. R. Gowers Dis. Nerv. Syst. (ed. 2) II. 333 If a scalpel is passed over the surface, it removes a little pyo-lymph. |
| 1860 Tanner Pregnancy iii. 181 The collection..of pus—*pyometra—in the [uterus]. |
| 1876 J. S. Bristowe The. & Pract. Med. (1878) 831 The cholesterine was traced to a *pyonephritic cyst. |
| 1897 Allbutt's Syst. Med. IV. 308 Abscess of the kidney, with or without perinephritic abscess, and pyelitis, leading to *pyonephrosis. |
| 1885 W. Roberts Urin. & Renal Dis. iii. v. (ed. 4) 514 Contracted from the pressure of a *pyonephrotic tumour. |
| 1853 Dunglison, *Pyopericardia, a collection of pus in the pericardium. 1898 Allbutt's Syst. Med. V. 125 Successful cases of draining the pyo-pericardium have been published. Ibid. 776 Pyopericardium is occasionally acute in its manifestations. |
| 1878 tr. Von Ziemssen's Cycl. Med. VIII. 124 *Pyopneumopericardium has thus far been observed only a few times. 1898 Allbutt's Syst. Med. V. 214 In a few recorded cases a pulmonary cavity has perforated the pericardium and produced pyopneumopericardium. |
| 1894 Lancet 3 Nov. 1033 The right side of the chest gave the physical signs of a *pyopneumothorax. 1897 Allbutt's Syst. Med. III. 537 Pyopneumothorax or gangrene of the lung. |
| 1811 Hooper Dict., *Pyorrhœa, a purulent discharge from the belly. 1875 Dental Cosmos XVII. 278 Your correspondent..while not very definite in his descriptions, is sufficiently so to indicate the disease as ‘pyorrhoea alveolaris’ of the French writers. 1878 tr. von Ziemssen's Cycl. Med. VIII. 777 The treatment of chronic pyorrhœa. 1921 Daily Colonist (Victoria, B.C.) 25 Mar. 7/6 (Advt.), Be suspicious of any tenderness or bleeding of the gums. This is usually the first stage of Pyorrhea—an insidious disease of the gums that destroys the teeth. 1975 J. Symons Three Pipe Problem xii. 93 The brick and mortar shaking loose like teeth with pyorrhoea. |
| 1878 tr. von Ziemssen's Cycl. Med. X. 345 The accumulation of pus in the tube—*pyosalpinx—may even lead to ulceration of the mucous membrane. |
| 1897 Allbutt's Syst. Med. IV. 132 Other symptoms significant of a general *pyosepticæmic infection of the system are present. |
| 1853 Markham Skoda's Auscult. 319 Effusions of blood, or pus—Hæmothorax—*Pyothorax—into the pleural cavity. 1876 tr. von Ziemssen's Cycl. Med. IV. 611 Purulent pleuritis (pyothorax, empyema). |
| 1873 C. H. Ralfe Phys. Chem. 40 Minute yellow crystals of *pyoxanthin. |
| 1866–8 Watts Dict. Chem. IV. 752 After the separation of the pyocyanin, the chloroform retains in solution a yellow substance called *pyoxanthose. |