Simple Definition of excretion
: the act or process of passing waste from the body : the process of excreting waste
: waste passed from the body : excreted matter
Examples of excretion in a sentence
The kidneys are organs of excretion.
First Known Use of excretion
EXCRETION Defined for Kids
Definition of excretion for Students
1 : the act or process of separating and giving off cellular waste matter from the body <excretion of urine>
2 : waste material given off from the body
Medical Definition of excretion
1: the act or process of excreting
2a: something eliminated by the process of excretion that is composed chiefly of urine or sweat in mammals including humans and of comparable materials in other animals, characteristically includes products of protein degradation (as urea or uric acid), usually differs from ordinary bodily secretions by lacking any further utility to the organism that produces it, and is distinguished from waste materials (as feces) that have merely passed into or through the digestive tract without being incorporated into the body properb: a waste product (as urine, feces, or vomit) eliminated from an animal body : excrement—not used technically
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