| absorp | absorption |
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| absorptiometry, photon | A noninvasive method for quantitating bone mineral content. It is used especially in the diagnosis of osteoporosis and also in measuring bone mineralization in infants. (12 Dec 1998) |
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| absorption | The process of absorbing, specifically: 1. <physiology> The movement and uptake of substances (liquids and solutes) into cells or across tissues such as skin, intestine and kiidney tubules, by way of diffusion or osmosis. 2. <chemistry> The drawing of a gas or liquid into the pores of a permeable solid. 3. <psychology> The devotion of thought to one object or activity, with inattention to others. 4. <radiology> The taking up of energy by matter with which the radiation interacts. 5. <physics> The loss of (electromagnetic) energy to a medium. For instance, an electromagnetic wave which propagates through a plasma will set the electrons into motion. If the electrons make collisions with other particles, they will absorb net energy from the wave. 6. <immunology> A process in which an antigen or antibody is used to pull an analogous antigen or antibody out of a solution. Compare: adsorption. Origin: L. Absorptio (12 Nov 1997) |
| absorption band | The range of wavelengths or frequencies in the electromagnetic spectrum where radiant energy is absorbed by passage through a gaseous, liquid, or dissolved substance; it is exploited for analytical purposes in colourimetry or spectrophotometry, and is usually described in terms of the wavelength where maximum absorbance occurs (i.e., lambdamax). (05 Mar 2000) |
| absorption cell | A small glass chamber with parallel sides, in which absorption spectra of solutions can be obtained. (05 Mar 2000) |
| absorption chromatography | <investigation> Techniques for separating molecules based on differential absorption and elution. Term for separation methods involving flow of a fluid carrier over a nonmobile absorbing phase. (18 Nov 1997) |
| absorption coefficient | <physics> Measures the degree of wave absorption defined as the fraction of wave energy lost as the wave travels a unit distance. See: absorption. (15 Jan 1998) |
| absorption collapse | Pulmonary collapse due to rapid complete obstruction of a large bronchus. (05 Mar 2000) |
| absorption fever | An elevation of temperature often occurring, without other untoward symptoms, shortly after childbirth, assumed to be due to absorption of uterine discharges through abrasions of the vaginal wall. (05 Mar 2000) |
| absorption lines | The dark line's in the solar spectrum due to absorption by the solar and the earth's atmosphere; the phenomenon occurs because rays passing from an incandescent body through a colder medium are absorbed by elements in that medium. (05 Mar 2000) |
| absorption spectroscopy | <investigation> This is the use of a spectrophotometer to measure the ability of particles (solutes) in a solution to absorb light through a range of specific wavelengths. Every compound absorbs light differently, so absorption spectra can be used to identify compounds, measure concentrations, and determine reaction rates. (15 Jan 1998) |
| absorption spectrum | <chemistry> A graph of the amount of light a substance absorbs, plotted as a fuction of energy, frequency or wavelength. (15 Jan 1998) |
| absorptive | 1. Anything which absorbs. "The ocean, itself a bad absorbent of heat." (Darwin) 2. <medicine> Any substance which absorbs and neutralizes acid fluid in the stomach and bowels, as magnesia, chalk, etc.; also a substance e. G, iodine) which acts on the absorbent vessels so as to reduce enlarged and indurated parts. 3. <physiology> The vessels by which the processes of absorption are carried on, as the lymphatics in animals, the extremities of the roots in plants. Source: Websters Dictionary (01 Mar 1998) |
| absorptive cells of intestine | Cell's on the surface of villi of the small intestine and the luminal surface of the large intestine that are characterised by having microvilli on their free surface. (05 Mar 2000) |
| absorptivity | Synonym: specific absorption coefficient, molar absorption coefficient. (05 Mar 2000) |
Synonyms : Absorptiometries, Dual-Photon, Absorptiometries, Photon, Absorptiometries, Single-Photon, Absorptiometry, Dual-Photon, Absorptiometry, Single-Photon, Dual Photon Absorptiometry, Dual-Photon Absorptiometries, Photon Absorptiometries, Photon Absorptiometry
Synonyms : Absorptions
| absorption |
(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium; "the absorption of photons by atoms or molecules" assimilation: the social process of absorbing one cultural group into harmony with another assimilation: the process of absorbing nutrients into the body after digestion concentration: complete attention; intense mental effort preoccupation: the mental state of being preoccupied by something
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| absorptivity |
(physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body
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| absorption spectrum |
the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
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| absorptive |
absorbent: having power or capacity or tendency to absorb or soak up something (liquids or energy etc.); "as absorbent as a sponge"
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| absorption coefficient |
a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber; "absorptance equals 1 minus transmittance"
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| absorp | a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance |
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| absorp | the mental state of being preoccupied by something |
| absorp | complete attention |
| absorp | (chemistry) a process in which one substance permeates another |
| absorp | (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium |
| absorp | the process of absorbing nutrients into the body after digestion |
| absorp | the social process of absorbing one cultural group into harmony with another |
| absorp | a dark band in the spectrum of white light that has been transmitted through a substance that exhibits absorption at selective wavelengths |
| absorp | a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance |
| absorp | (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body |
| absorp | an indicator used in reactions that involve precipitation |
| absorp | the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths |
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