What does microorganism mean?

Definitions for microorganism
ˌmaɪ kroʊˈɔr gəˌnɪz əm; -ɔrˈgæn ɪkmicro·organ·ism

This dictionary definitions page includes all the possible meanings, example usage and translations of the word microorganism.

Princeton's WordNet

  1. microorganism, micro-organismnoun

    any organism of microscopic size

Wiktionary

  1. microorganismnoun

    An organism that is too small to be seen by the unaided eye, especially a single-celled organism, such as a bacterium.

    The cud is then reswallowed and further digested by specialized microorganisms that live in the rumen.

Wikipedia

  1. Microorganism

    A microorganism, or microbe, 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 ancient times, such as in Jain scriptures from sixth century BC India. The scientific study of microorganisms began with their observation under the microscope in the 1670s by Anton van Leeuwenhoek. In the 1850s, Louis Pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. In the 1880s, Robert Koch discovered that microorganisms caused the diseases tuberculosis, cholera, diphtheria, and anthrax. Because microorganisms include most unicellular organisms from all three domains of life they can be extremely diverse. Two of the three domains, Archaea and Bacteria, only contain microorganisms. The third domain Eukaryota includes all multicellular organisms as well as many unicellular protists and protozoans that are microbes. Some protists are related to animals and some to green plants. There are also many multicellular organisms that are microscopic, namely micro-animals, some fungi, and some algae, but these are generally not considered microorganisms.Microorganisms can have very different habitats, and live everywhere from the poles to the equator, deserts, geysers, rocks, and the deep sea. Some are adapted to extremes such as very hot or very cold conditions, others to high pressure, and a few, such as Deinococcus radiodurans, to high radiation environments. Microorganisms also make up the microbiota found in and on all multicellular organisms. There is evidence that 3.45-billion-year-old Australian rocks once contained microorganisms, the earliest direct evidence of life on Earth.Microbes are important in human culture and health in many ways, serving to ferment foods and treat sewage, and to produce fuel, enzymes, and other bioactive compounds. Microbes are essential tools in biology as model organisms and have been put to use in biological warfare and bioterrorism. Microbes are a vital component of fertile soil. In the human body, microorganisms make up the human microbiota, including the essential gut flora. The pathogens responsible for many infectious diseases are microbes and, as such, are the target of hygiene measures.

ChatGPT

  1. microorganism

    A microorganism, also known as a microbe, is a tiny living organism that is so small it can only be seen with the use of a microscope. This includes various types of life forms like bacteria, viruses, fungi, algae, and protozoa. They can exist as single individuals or as colonies, and they are found in all types of environments on Earth. Some microorganisms can cause diseases in animals and plants, while others are harmless or even beneficial.

Webster Dictionary

  1. Microorganismnoun

    any microscopic form of life; -- particularly applied to bacteria and similar organisms, esp. such are supposed to cause infectious diseases

  2. Etymology: [Micro- + organism.]

Wikidata

  1. Microorganism

    A microorganism or microbe is a microscopic organism, which may be a single cell or multicellular organism. The study of microorganisms is called microbiology, a subject that began with Anton van Leeuwenhoek's discovery of microorganisms in 1675, using a microscope of his own design. Microorganisms are very diverse; they include all of the prokaryotes, namely the bacteria and archaea; and various forms of eukaryotes, comprising the protozoa, fungi, algae, microscopic plants, and animals such as rotifers and planarians. Some microbiologists also classify viruses as microorganisms, but others consider these as nonliving. Most microorganisms are microscopic, but there are some like Thiomargarita namibiensis, which are macroscopic and visible to the naked eye. Microorganisms live in every part of the biosphere including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth's crust. Microorganisms are crucial to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can fix nitrogen, they are a vital part of the nitrogen cycle, and recent studies indicate that airborne microbes may play a role in precipitation and weather.

Matched Categories

How to pronounce microorganism?

How to say microorganism in sign language?

Numerology

  1. Chaldean Numerology

    The numerical value of microorganism in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of microorganism in Pythagorean Numerology is: 1

Examples of microorganism in a Sentence

  1. Matthew Golden:

    My concern about this microorganism is that as it becomes ever more resistant, it will become ever more prevalent.

Popularity rank by frequency of use

microorganism#10000#71016#100000

Translations for microorganism

From our Multilingual Translation Dictionary

Get even more translations for microorganism »

Translation

Find a translation for the microorganism definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Citation

Use the citation below to add this definition to your bibliography:

Style:MLAChicagoAPA

"microorganism." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/microorganism>.

Discuss these microorganism definitions with the community:

0 Comments

    Are we missing a good definition for microorganism? Don't keep it to yourself...

    Image or illustration of

    microorganism

    Credit »

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Browse Definitions.net

    Quiz

    Are you a words master?

    »
    quickly aroused to anger
    A irascible
    B lacerate
    C commensal
    D bristly

    Nearby & related entries:

    Alternative searches for microorganism: