oxygen cycle


Definition of OXYGEN CYCLE

:  the cycle whereby atmospheric oxygen is converted to carbon dioxide in animal respiration and regenerated by green plants in photosynthesis

First Known Use of OXYGEN CYCLE



Next Word in the Dictionary: oxygen debtPrevious Word in the Dictionary: oxygenatorAll Words Near: oxygen cycle
May 22, 2015
nepotism Hear it
favoritism based on kinship
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears