| polyporous | Synonym: cribriform. Origin: poly-+ G. Poros, pore (05 Mar 2000) |
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| polyporus | Origin: NL, fr. Gr. Many + a pore. <botany> A genus of fungi having the under surface full of minute pores; also, any fungus of this genus. Polyporus fomentarius was formerly dried and cut in slices for tinder, called amadou. P. Betulinus is common in America, and forms very large thick white semicircular excrescences on birch trees. Several species of Polyporous are considered edible. Source: Websters Dictionary (01 Mar 1998) |
| polyposia | Rarely used term for sustained, excessive consumption of liquids. Origin: poly-+ G. Posis, drinking (05 Mar 2000) |
| polyposis | Presence of several polyps. Origin: polyp + G. -osis, condition (05 Mar 2000) |
| polyposis coli | Hereditary disorder (Mendelian dominant) characterised by the development of hundreds of adenomatous polyps in the large intestine, which show a tendency to progress to malignancy. The APC gene has also been implicated in a chromosome 5 gastric and pancreatic cancer. (18 Nov 1997) |
| polyposis syndromes | <radiology> Inher. Malig. Type familial polyposis coli dom and adenoma Gardner syndrome dom and Turcot syndrome rec CNS Peutz-Jeghers syndrome dom (+) hamartoma Cowden syndrome dom ? juvenile polyposis coli (?) - juvenile Cronkhite-Canada syndrome (12 Dec 1998) |
| polypotome | An instrument used for cutting away a polyp. Origin: polyp + G. Tomos, cutting (05 Mar 2000) |
| polypotrite | An instrument for crushing polyps. Origin: polyp + L. Tero, pp. Tritus, to rub (05 Mar 2000) |
| polypous | Pertaining to, manifesting the gross features of, or characterised by the presence of a polyp or polyps. (05 Mar 2000) |
| polypous endocarditis | Bacterial endocarditis with the formation of pedunculated masses of fibrin, or thrombi, attached to the ulcerated valves. (05 Mar 2000) |
| polypous gastritis | A form of chronic gastritis, in which there is irregular atrophy of the mucous membrane with cystic glands giving rise to a knobby or polypous appearance of the surface. (05 Mar 2000) |
| polypragmasy | Administration of many different remedies at the same time. Origin: poly-+ G. Pragma, a thing (05 Mar 2000) |
| polyprenol kinase | <enzyme> Used ficaprenol as substrate Registry number: EC 2.7.1.- Synonym: polyisoprenol kinase (26 Jun 1999) |
| polyprenol reductase | <enzyme> Involved in dolichol biosynthesis Registry number: EC 1.3.1.- (26 Jun 1999) |
| polyprenols | Acyclic polyisoprene alcohols. (05 Mar 2000) |
| polyplastic |
(poly
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| polyparasitism |
(poly
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| polypathia |
(poly
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| polyploid |
(poly·ploid) (pol¢e-ploid) [poly- + haploid] 1. having more than two full sets of homologous chromosomes. There may be three (triploid), four (tetraploid), five (pentaploid), six (hexaploid), seven (heptaploid), eight (octaploid), etc. 2. an individual or cell having more than two full sets of homologous chromosomes. Polyploid organisms, especially plants, are larger than normal and have larger cells. Affected animals are often abnormal in appearance and usually infertile. Cf. aneuploid.
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| polypeptide chain |
the structural element of protein, consisting of a series of amino acid residues (peptides, qv) joined together by peptide bonds.
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| polyp | a small vascular growth on the surface of a mucous membrane |
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