biological oxygen demand
Americannoun
Etymology
Origin of biological oxygen demand
First recorded in 1940–45
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“There had to be a chemical reaction other than organic anaerobic digestion. We actually had a chemical oxygen demand, not a biological oxygen demand.”
From Los Angeles Times
Sanitation officials said in emails that the facility has exceeded levels for solid particles in the wastewater as well as levels for biological oxygen demand and turbidity, or water clarity, all of which are used to measure the degree of organic pollution during the treatment process.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
