Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

biochemical oxygen demand

noun

Definition of biochemical oxygen demand

  1. :  the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage)



Circa 1927

First Known Use of biochemical oxygen demand

circa 1927


Medical Dictionary

biochemical oxygen demand

play
noun biochemical oxygen de·mand \-di-ˌmand\

Medical Definition of biochemical oxygen demand

  1. :  the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage)—called also biological oxygen demand, oxygen demand




Learn More about biochemical oxygen demand


Seen and Heard

What made you want to look up biochemical oxygen demand? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet kittly-benders pince-nez spindrift
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ