| anaemic anoxia | A term formerly considered synonymous with anaemic hypoxia, but now reserved for extremely severe cases in which oxygen is almost completely lacking. (05 Mar 2000) |
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| anaemic halo | Pale, relatively avascular areas in the skin seen around vascular spiders, cherry angiomas, and sometimes in acute macular eruptions. (05 Mar 2000) |
| anaemic hypoxia | Hypoxia resulting from a decreased concentration of functional haemoglobin or a reduced number of erythrocytes; it is caused by haemorrhage or anaemia of various types, or by poisoning with CO2, nitrites, or chlorates. (05 Mar 2000) |
| anaemic infarct | An infarct in which little or no bleeding into tissue spaces occurs when the blood supply is obstructed. Synonym: pale infarct, white infarct. (05 Mar 2000) |
| anaemic murmur | A nonvalvular murmur heard on auscultation of the heart and large blood vessels in cases of profound anaemia associated mainly with turbulent blood flow due to decreased blood viscosity. (05 Mar 2000) |
| anaerobe | A microorganism that either does not require oxygen or actually cannotlive in the presence of oyxgen. (09 Oct 1997) |
| anaerobic | 1. Lacking molecular oxygen. 2. Growing, living or occurring in the absence of molecular oxygen, pertaining to an anaerobe. (18 Nov 1997) |
| anaerobic bacteria | Bacteria which thrive in the absence of oxygen. (27 Sep 1997) |
| anaerobic digester | This is a bioreactor foranaerobically digesting sewage-laced wastewater.In it, anaerobic bacteriaproduce a mix of methane and carbon dioxide, asmuch as 90% of the chemical energy in the wastewater can be converted to methane, which is typically exhausted continuously and collected for useas a fuel or for a reagent for other industrial chemical reactions. (09 Oct 1997) |
| anaerobic digestion | A biochemical process by which organic matter is decomposed by bacteria in the absence of oxygen, producing methane and other byproducts. (05 Dec 1998) |
| anaerobic respiration | Respiration under anaerobic conditions. The terminal electron acceptor, instead of oxygen in the case of regular respiration, can be: carbon dioxide, Fe2+, fumarate, nitrate, nitrite, nitrous oxide, sulphur, sulphate, etc. Note that anaerobic respiration still uses the electron transport chain to dump the electron while fermentation does not. (09 Oct 1997) |
| anaerobic threshold | The oxygen consumption level above which aerobic energy production is supplemented by anaerobic mechanisms during exercise, resulting in a sustained increase in lactate concentration and metabolic acidosis. The anaerobic threshold is affected by factors that modify oxygen delivery to the tissues; it is low in patients with heart disease. Methods of measurement include direct measure of lactate concentration, direct measurement of bicarbonate concentration, and gas exchange measurements. (12 Dec 1998) |
| anaerobies | <biology> Microorganisms which do not require oxygen, but are killed by it. Origin: Gr. Priv. +, air + life. Source: Websters Dictionary (01 Mar 1998) |
| anaerobiosis | Life in the absence of air or free oxygen. Anaerobic respiration, respiration occurring in the absence of oxygen. (09 Oct 1997) |
| anaerobiotic | <anatomy> Related to, or of the nature of, anaerobies. Source: Websters Dictionary (01 Mar 1998) |