follow Dictionary.com

Get the details behind our redesign

biochemical oxygen demand

noun
1.
the oxygen required by aerobic organisms, as those in sewage, for metabolism.
Abbreviation: BOD.
Origin
1925-1930
1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for bio-chemical oxygen demand

biochemical oxygen demand

noun
1.
a 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 days 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
Cite This Source
bio-chemical oxygen demand in Medicine

biochemical 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. Also called biological oxygen demand.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
bio-chemical oxygen demand in Science
biochemical oxygen demand
  (bī'ō-kěm'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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of The Day

Difficulty index for biochemical oxygen demand

Few English speakers likely know this word

Word Value for bio

5
6
Scrabble Words With Friends