Search results
- Dictionaryexcretion/ɪkˈskriːʃn/
noun
- 1. (in living organisms and cells) the process of eliminating or expelling waste matter.
Powered by Oxford Dictionaries
noun
Powered by Oxford Dictionaries
Process of elimination by an organism of the waste products that arise as a result of metabolic activities
Excretion is elimination of metabolic waste, which is an essential process in all organisms. In vertebrates, this is primarily carried out by the lungs, kidneys, and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. For example, placental mammals expel urine from the bladder through the urethra, which is part of the excretory system. Unic... Wikipedia