| dense-deposit disease | See: membranoproliferative glomerulonephritis. (05 Mar 2000) |
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| densification | A mechanical process to compress biomass (usually wood waste) into pellets, briquettes, cubes, or densified logs. (05 Dec 1998) |
| densimeter | Synonym: densitometer. Origin: L. Densitas, density, + G. Metron, measure (05 Mar 2000) |
| densitometer | 1. An instrument for measuring the density of a fluid. Synonym: densimeter. 2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics, phage studies, etc. 3. An instrument for measuring the density of components (e.g., protein fractions) separated by electrophoresis or chromatography, utilizing light absorption or reflection. 4. An electronic instrument for measuring the blackening of radiographic film by X-ray exposure; used for film sensitometry, bone densitometry, measurement of line spread function (microdensitometer). Origin: L. Densitas, density, + G. Metron, measure (05 Mar 2000) |
| densitometry | A procedure utilizing a densitometer. (05 Mar 2000) |
| densitometry, X-ray | Measurement of the degree of darkening of X-ray film by means of a photocell which measures light transmission through the film. (12 Dec 1998) |
| density | 1. <radiology> The amount of darkness or light in an area of a scan reflects the compactness and density of tissue. Differences in tissue density are the basis for CT and MR scans. 2. <microscopy> Logarithm to the base 10 of the reciprocal of transmittance. (12 Jan 1998) |
| density dependent inhibition of growth | <cell culture> The phenomenon exhibited by most normal (anchorage dependent) animal cells in culture that stop dividing once a critical cell density is reached. The critical density is considerably higher for most cells than the density at which a monolayer is formed, for this reason, most cell behaviourists prefer the term density dependent inhibition of growth as this avoids any confusion with contact inhibition of locomotion, a totally different phenomenon that is contact dependent. (12 Jan 1998) |
| density gradient | <chemistry> A column of liquid in which the density varies continually with position, usually as a consequence of variation of concentration of a solute. Such gradients may be established by progressive mixing of solutions of different density as for example: sucrose gradients) or by centrifuge induced redistribution of solute (as for caesium chloride gradients). Density gradients are widely used for centrifugal and gravity induced separations of cells, organelles and macromolecules. The separations may exploit density differences between particles or primarily differences in size, in which latter case the function of the gradient is chiefly to stabilise the liquid column against mixing. (12 Jan 1998) |
| density gradient centrifugation | <technique> High-speed centrifugation inwhich molecules float at a point wheretheir density equals that in a gradient of cesium chloride or sucrose. (12 Jan 1998) |
| density-dependent | <epidemiology> 1. Effects whose intensity changes with increasing population density. 2. Effects whose intensity increases with increasing population density, for example a mortality which becomes very high near a carrying capacity. Effects which become less pronounced at higher population sizes (perhaps the reduction in fecundity caused by the difficulty of mating) are sometimes called inverse density dependent. Density dependent effects are often a cause of nonlinearity in a model. (05 Dec 1998) |
| densovirinae | A subfamily of DNA arthropod viruses, in the family parvoviridae. The host range includes members of dictyoptera, diptera, lepidoptera, odonata, and orthoptera. There are three genera: densovirus, iteravirus, and contravirus. There is evidence that densovirus-like viruses also infect and multiply in crabs and shrimp. (12 Dec 1998) |
| densovirus | A genus of parvoviridae, subfamily densovirinae, comprising helper-independent viruses containing only two species. Junonia coenia densovirus is the type species. (12 Dec 1998) |
| dent | 1. <prefix> Relating to the teeth or dentition, dental. See: odonto-. Origin: L. Dens, tooth 2. A slight depression, or small notch or hollow, made by a blow or by pressure; an indentation. "A blow that would have made a dent in a pound of butter." (De Quincey) Origin: A variant of Dint. Source: Websters Dictionary (21 Jun 2000) |
| dental | 1. <dentistry> Of or pertaining to the teeth or to dentistry; as, dental surgery. 2. <zoology> Dental formula, a brief notation used by zoologists to denote the number and kind of teeth of a mammal. Dental surgeon, a dentist. Origin: L. Dens, dentis, tooth: cf. F. Dental. 3.. <marine biology> A marine mollusk of the genus Dentalium, with a curved conical shell resembling a tooth. See Dentalium. Origin: Cf. F. Dentale. (21 Jun 2000) |
Synonyms : Care, Dental
Synonyms : Dental Care for Elderly, Aged, Dentistry for
Synonyms : Children, Dentistry for
Synonyms : Chronically Ill, Dental Care, Chronically Ill, Dentistry, Dentistry Chronically Ill
Synonyms : Disabled, Dentistry for, Handicapped, Dentistry for
| dendritic |
(neuroscience) of or relating to or resembling a dendrite; "dendritic fiber"
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| dendroid |
arboreal: resembling a tree in form and branching structure; "arborescent coral found off the coast of Bermuda"; "dendriform sponges"
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| dengue |
an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
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| dengue fever |
dengue: an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
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| denial |
the act of refusing to comply (as with a request); "it resulted in a complete denial of his privileges" the act of asserting that something alleged is not true (psychiatry) a defense mechanism that denies painful thoughts abnegation: renunciation of your own interests in favor of the interests of others defense: a defendant's answer or plea denying the truth of the charges against him; "he gave evidence for the defense"
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| DEN | a belittling comment |
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| DEN | (used of statements) harmful and often untrue |
| DEN | (used of statements) harmful and often untrue |
| DEN | a coarse durable twill-weave cotton fabric |
| DEN | close-fitting pants of heavy denim for casual wear (usually in the plural) |
| DEN | French philosopher who was a leading figure of the Enlightenment in France |
| DEN | copperheads |
| DEN | venomous but sluggish reddish-brown snake of Australia |
| DEN | remove nitrogen from |
| DEN | a plant or animal naturalized in a region |
| DEN | a person who inhabits a particular place |
| DEN | a constitutional monarchy in northern Europe |
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