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 …

Microorganisms is a scientific, peer-reviewed, open access journal of microbiology, published monthly online by MDPI.

Dec 4, 2025 · Microbiology, the scientific study of microorganisms, a diverse group of generally minute simple life-forms, including bacteria, algae, and viruses. The field is concerned with the structure, …

Apr 29, 2017 · A microorganism is a living thing that is too small to be seen with the naked eye. Examples of microorganisms include bacteria, archaea, algae, protozoa, and microscopic animals …

Mar 28, 2024 · A microorganism, or microbe, is a tiny living organism that is invisible to the naked eye and can exist as single-celled entities or colonies of cells.

Nov 19, 2025 · Microorganisms are microscopic life forms that are found everywhere. They can be unicellular or multicellular and can be harmful or beneficial. They play diverse roles in nutrient …

The meaning of MICROORGANISM is an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size.

Aug 4, 2025 · Microorganisms are essential to life. They ferment our food, enrich our soil, fix nitrogen, decompose the dead, and help regulate the climate. Some cause disease and devastation, but many …

A microorganism is a living entity that is too small to be seen unaided. This term encompasses bacteria, archaea, microscopic fungi, algae, and protozoa; viruses and prions, although not truly living, are …

Feb 21, 2023 · A microorganism or microbe is an organism that is so small that it is microscopic (invisible to the naked eye).