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  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.

  2. 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]

  3. 16.2 Organs of Excretion – Human Biology

    Some human body wastes are gases, some are solids, and some are in a liquid state. Getting rid of body wastes is called excretion, and there are a number of different organs of excretion in …

  4. 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 …

  5. 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.

  6. What Is Excretion? The Process and Its Organs - ScienceInsights

    Nov 15, 2025 · Excretion is often confused with other biological processes, particularly elimination and secretion, yet each term describes a distinct physiological action. Excretion specifically …

  7. 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 …

  8. EXCRETION Definition & Meaning - Merriam-Webster

    The meaning of EXCRETION is the act or process of excreting. How to use excretion in a sentence.

  9. Excretion | definition of excretion by Medical dictionary

    Ordinarily, what is meant by excretion is defecation, the evacuation of feces. Technically, excretion can refer to the expulsion of any matter, whether from a single cell or from the entire …

  10. 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.