microorganism

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Related to Single-celled organism: Unicellular Organisms

microorganism

 [mi″kro-or´gah-nizm]
a microscopic organism; those of medical interest include bacteria, fungi, and protozoa. Viruses are often classified as microorganisms, although they are sometimes excluded because they are not cellular and they are unable to replicate without a host cell.

mi·cro·or·gan·ism

(mī'krō-ōr'gan-izm),
A microscopic organism (plant or animal).

microorganism

/mi·cro·or·gan·ism/ (-or´gah-nizm) a microscopic organism; those of medical interest include bacteria, fungi, and protozoa. Viruses are often included, but are sometimes excluded because they are not cellular and are unable to replicate without a host cell.

microorganism

[-ôr′gəniz′əm]
Etymology: Gk, mikros + organon, instrument
any tiny, usually microscopic entity capable of carrying on living processes. It may be pathogenic. Kinds of microorganisms include bacteria, fungi, protozoan, and viruses.

microorganism

An organism detected by microscopy—e.g., viruses, bacteria, fungi and intracellular parasites (protozoans).

microorganism

 A organism detected by microscopy–eg, viruses, bacteria, fungi and intracellular parasites–protozoans; bug

mi·cro·or·gan·ism

(mī'krō-ōr'găn-izm)
A microscopic organism (plant or animal).

microorganism

or

microbe

any microscopic organism such as a BACTERIUM, FUNGUS, PROTOZOAN, microscopicALGA or member of the ARCHAEA.

Microorganism

An organism (life form) that is too small to be seen with the naked eye.

microorganism

; MO generic term denoting bacteria, fungi, rickettsiae and viruses

mi·cro·or·gan·ism

(mī'krō-ōr'găn-izm)
A microscopic organism (plant or animal).

microorganism

(mī´krō ōr´gənizəm),
n a microscopic living organism, such as a bacterium, virus, rickettsia, yeast, or fungus. These may exist as part of the normal flora of the oral cavity without producing disease. With disturbance of the more or less balanced interrelationship among the organisms or between the organisms and host resistance, individual forms may overgrow and induce disease in the host's tissues. Those foreign to the individual may invade and produce pathologic processes.

microorganism

a microscopic organism; those of veterinary interest include bacteria, rickettsiae, viruses, fungi and protozoa.
References in periodicals archive ?
Washington, August 20 (ANI): NASA-funded research has found that humans not might be walking on Earth today if not for the ancient fusing of two microscopic, single-celled organisms called prokaryotes 2.
Now, Liverpool scientists, in collaboration with the Institute for Animal Health, have demonstrated that Salmonella use a secretion system to protect themselves inside amoeba - a single-celled organism living on land and in the water.
The journey begins in Charnwood Forest in Leicestershire, close to where David grew up, where the discovery of a 560-million-year-old fossil - a complex organism called Charnia - helped transform understanding of how life began to evolve from the earliest single-celled organisms.
The aqueous Soft Avenue might have been made by torchlight on a nighttime dive, while The Nebulous evokes a microscopic view of single-celled organisms whirling through inner space.
The esteemed and enduring Handbook of Zoology, a German work initiated in the 1920s, treats the whole animal kingdom, from single-celled organisms to mammals, in eight volumes, offering overviews on animal systematics and morphology and coverage of physiology, behavior, ecology, and applied aspects of zoological research.
Bernhard studies the ecology and biogeochemistry of some of the ocean's smallest inhabitants: single-celled organisms called foraminifera, which play a central role in the marine food web.
What biologists know about life so far is that only single-celled organisms can live in places that have no oxygen, and that multicellular organisms can visit these places, but not live there.
The slime helps the single-celled organisms survive in the lake's extreme conditions.
Nutrients like iron or nitrogen provoke the growth of phytoplankton, algae-like single-celled organisms that are a major source of food in the ocean--in a process similar to fertilising a garden, say experts.
These algae, specifically phytoplankton, are microscopic single-celled organisms that form dense patches on the water's surface.
Sapphire Energy uses single-celled organisms such as algae to produce a chemical mixture from which it is possible to extract fuels for cars or aircraft.
The inputs for algae are simple: the single-celled organisms need only sunlight, water, and carbon dioxide to grow.

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