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microorganism
| Babylon English | Download this dictionary |
microorganism
n.
microscopic life form, bacteria
| English Wikipedia - The Free Encyclopedia | Download this dictionary |
Microorganism
A microorganism (from the , mikros, "small" and , organismós, "organism") is a microscopic living organism, which may be single celled or multicellular. The study of microorganisms is called microbiology, a subject that began with the discovery of microorganisms in 1674 by Antonie van Leeuwenhoek, using a microscope of his own design.
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| WordNet 2.0 | Download this dictionary |
microorganism
Noun
1. any organism of microscopic size
(hypernym) organism, being
(hyponym) intestinal flora
(part-meronym) pilus
(classification) animal, animate being, beast, brute, creature, fauna
(class) highly infective
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Microorganism
(n.)
Any microscopic form of life; -- particularly applied to bacteria and similar organisms, esp. such are supposed to cause infectious diseases.
Any microscopic form of life; -- particularly applied to bacteria and similar organisms, esp. such are supposed to cause infectious diseases.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
| NCI Dictionary of Cancer Terms | Download this dictionary |
microorganism
An organism that can be seen only through a microscope. Microorganisms include bacteria, protozoa, algae, and fungi. Although viruses are not considered living organisms, they are sometimes classified as microorganisms.
A Service of the National Cancer Institute.
