
Excretion - Wikipedia
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. [1]
Excretion | Definition, Systems, Examples, Importance, & Facts
Dec 3, 2025 · Excretion is a general term referring to the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal.
Excretion Definition - General Biology I Key Term | Fiveable
Excretion is the biological process through which animals eliminate waste products generated from metabolic activities. This process is essential for maintaining homeostasis, as it helps to …
Excretion - Definition, Function, Types, Examples, Metabolites
Nov 28, 2025 · Excretion is the biological process by which organisms eliminate metabolic wastes such as urea, ammonia, CO₂, excess water, and salts. Humans excrete waste through …
What Is Excretion? The Purpose and Process in the Body
Excretion is a biological process that removes waste products from living organisms. These wastes are byproducts of metabolic activities within cells. Removing these substances is …
What Is Excretion? The Body’s Waste Removal System
Nov 20, 2025 · Excretion is the process by which an organism removes the waste products generated by its metabolism. These wastes are chemical by-products of cellular activity, such …
EXCRETION Definition & Meaning - Merriam-Webster
Dec 7, 2016 · The meaning of EXCRETION is the act or process of excreting. How to use excretion in a sentence.
Excretion - Definition and Examples | Biology Dictionary
Apr 17, 2019 · Excretion is the process that biological organisms use to expel or eliminate the waste products produced by their metabolisms.
Excretory System - CK-12 Foundation
Jan 1, 2026 · Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Although the kidneys are the main …
EXCRETION | definition in the Cambridge English Dictionary
Excretion is one of several activities common to both plants and animals. Eating too much salt causes the excretion of excessive amounts of calcium.