excretion

noun ex·cre·tion \ ik-ˈskrē-shən \

Definition of excretion

1 : the act or process of excreting
2 : something excreted; especially : metabolic waste products (such as urea and carbon dioxide) that are eliminated from the body

Examples of excretion in a Sentence

  1. The kidneys are organs of excretion.

Recent Examples of excretion from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'excretion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of excretion

1578


EXCRETION Defined for English Language Learners

excretion

noun

Definition of excretion for English Language Learners

  • : the act or process of passing waste from the body : the process of excreting waste

  • : waste passed from the body : excreted matter


EXCRETION Defined for Kids

excretion

noun ex·cre·tion \ ik-ˈskrē-shən \

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 Dictionary

excretion

noun ex·cre·tion \ ik-ˈskrē-shən \

medical Definition of excretion

1 : the act or process of excreting
2 a : 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 proper
b : a waste product (as urine, feces, or vomit) eliminated from an animal body : excrement not used technically


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