| cervical oesophageal web | <radiology> Post-cricoid web, M=F, 5% of UGI patients, anterior (antero-lateral), with or without dysphagia, Treatment: endoscopic disruption (lysis) see: oesophageal webs and rings (12 Dec 1998) |
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| web | 1. That which is woven; a texture; textile fabric; especially, something woven in a loom. "Penelope, for her Ulysses' sake, Devised a web her wooers to deceive." (Spenser) "Not web might be woven, not a shuttle thrown, or penalty of exile." (Bancroft) 2. A whole piece of linen cloth as woven. 3. The texture of very fine thread spun by a spider for catching insects at its prey; a cobweb. "The smallest spider's web." 4. Tissue; texture; complicated fabrication. "The somber spirit of our forefathers, who wove their web of life with hardly a . . . Thread of rose-colour or gold." (Hawthorne) "Such has been the perplexing ingenuity of commentators that it is difficult to extricate the truth from the web of conjectures." (W. Irving) 5. A band of webbing used to regulate the extension of the hood. 6. A thin metal sheet, plate, or strip, as of lead. "And Christians slain roll up in webs of lead." (Fairfax) Specifically: The blade of a sword. "The sword, whereof the web was steel, Pommel rich stone, hilt gold." (Fairfax) The blade of a saw. The thin, sharp part of a colter. The bit of a key. 7. <machinery> A plate or thin portion, continuous or perforated, connecting stiffening ribs or flanges, or other parts of an object. Specifically: The thin vertical plate or portion connecting the upper and lower flanges of an lower flanges of an iron girder, rolled beam, or railroad rail. A disk or solid construction serving, instead of spokes, for connecting the rim and hub, in some kinds of car wheels, sheaves, etc. The arm of a crank between the shaft and the wrist. The part of a blackmith's anvil between the face and the foot. 8. <ophthalmology> Pterygium; called also webeye. 9. <anatomy, ornithology> The membrane which unites the fingers or toes, either at their bases, as in man, or for a greater part of their length, as in many water birds and amphibians. 10. <zoology> The series of barbs implanted on each side of the shaft of a feather, whether stiff and united together by barbules, as in ordinary feathers, or soft and separate, as in downy feathers. See Feather. <medicine> Pin and web, the system of braces connecting the flanges of a lattice girder, post, or the like. Origin: OE. Web, AS. Webb; akin to D. Web, webbe, OHG. Weppi, G. Gewebe, Icel. Vefr, Sw. Vaf, Dan. Vaev. See Weave. Source: Websters Dictionary (01 Mar 1998) |
| web eye | <medicine> See Web. Source: Websters Dictionary (01 Mar 1998) Previous: Weber's syndrome, Weber's test for hearing, Weber's triangle, Weber, WilhelmNext: web eye, webfoot, webform, web of fingers/toes, webster, websteriteweb eye pterygium |
| web of fingers/toes | One of the folds of skin, or rudimentary web, between the fingers and toes. Synonym: interdigital folds, plica interdigitalis. (05 Mar 2000) |
| spider's web | <zoology> The silken web which is formed by most kinds of spiders, particularly the web spun to entrap their prey. See Geometric spider, Triangle spider, under Geometric, and Triangle. Source: Websters Dictionary (01 Mar 1998) |
| oesophageal web | A cribriform or web formation in the oesophagus caused by an irregular atrophy. (05 Mar 2000) |
| terminal web | <cell biology> The cytoplasmic region at the base of microvilli in intestinal epithelial cells, a region rich in microfilaments from the microvillar core and from adherens junctions, in myosin and in other proteins characteristic of an actomyosin motor system. (13 Jan 1998) |
| trophic web | <biology> Feeding relationships in communities that determine the flow of energy and materials from plants to herbivores, carnivores and scavengers. (09 Oct 1997) |
| acceptor site | The ribosomal binding site for the aminoacyl-tRNA during protein synthesis. (05 Mar 2000) |
| acceptor splicing site | Boundary between the right end of an intron and the left end of the adjacent exon. Synonym: acceptor splicing site. (05 Mar 2000) |
| active site | <chemistry> A specific region of an enzyme where a substrate binds and catalysis takes place (binding site). (06 May 1997) |
| allosteric site | A specific site on a multi-subunit enzyme or other protein that is not the substrate binding site, but that when reversibly bound by an effector, induces a conformational change in the protein, altering its catalytic or binding properties. (12 Dec 1998) |
| amidation site | <molecular biology> A C terminus consensus sequence, required for C terminus amidation of peptides. Consensus is glycine, followed by 2 basic amino acids (arg or lys). (18 Nov 1997) |
| antibody combining site | <immunology> In immune network theory, an idiotope, an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope). Also used of the site on a ligand molecule to which a cell surface receptor binds. (18 Nov 1997) |
| antigen-binding site | <immunology> In immune network theory, an idiotope, an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope). Also used of the site on a ligand molecule to which a cell surface receptor binds. (18 Nov 1997) |