| 单词 | biochemical oxygen demand |
| 释义 | biochemical oxygen demandnounthe oxygen required by aerobic organisms, as those in sewage, for metabolism. Abbreviation: BOD Also called biological oxygen demand. Origin of biochemical oxygen demandFirst recorded in 1925–30 Words nearby biochemical oxygen demandbiocatalyst, biocellate, biocenology, biocenosis, biocentric, biochemical oxygen demand, biochemical pathways, biochemical profile, biochemistry, biochip, biocidal Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for biochemical oxygen demandbiochemical oxygen demand nouna measure of the organic pollution of water: the amount of oxygen, in mg per litre of water, absorbed by a sample kept at 20°C for five daysAbbreviation: BOD Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for biochemical oxygen demandbiochemical oxygen demand n.The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water and used as a measure of the degree of water pollution.biological oxygen demand The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for biochemical oxygen demandbiochemical oxygen demand [ bī′ō-kĕm′ĭ-kəl ] The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water, such as one polluted by sewage. It is used as a measure of the degree of water pollution. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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