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  1. MICROBE Definition & Meaning - Merriam-Webster

    Microbes, or microorganisms, include bacteria, protozoa, fungi, algae, amoebas, and slime molds. Many people think of microbes as simply the causes of disease, but every human is actually the host to …

  2. Microorganism - Wikipedia

    A microorganism, or microbe, [a] is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from …

  3. What are Microbes? - University of Utah

    The "microbe" category includes microscopic plants. Most microscopic plants are counted among the “green algae” (a general term), and they live as single cells (sometimes with flagella) or long fibers.

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  4. In brief: What are microbes? - InformedHealth.org - NCBI ...

    Apr 5, 2022 · Microbes are tiny living things that are found all around us. Also known as microorganisms, they are too small to be seen by the naked eye. They live in water, soil, and in the air. The human …

  5. Microbiology | Definition, History, & Microorganisms | Britannica

    Dec 4, 2025 · microbiology, study of microorganisms, or microbes, a diverse group of generally minute simple life-forms that include bacteria, archaea, algae, fungi, protozoa, and viruses.

  6. Microbe - Definition and Examples - Biology Online Dictionary

    Jun 16, 2022 · Microbe Definition What is a microbe? How do we define microbes? Microbes refer to microorganisms that cannot be seen by naked eyes but can only be seen under a microscope. The …

  7. What Are Microbes? An In-depth Definition • BNS Institute

    May 18, 2025 · Microbes, the tiny organisms that surround us everywhere, play crucial roles in our health, environment, and even the planet’s history. Understanding what microbes are is fundamental …