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Definition of the noun micro-organism

What does micro-organism mean as a name of something?


  1. any organism of microscopic size
    • example: The disease was caused by a new micro-organism.
    • domains: animal / animate being / beast / brute / creature / fauna; flora / plant / plant life
    • lexical domain: Animals - nouns denoting animals
    • alternative spelling: microorganism
    • more generic words: being / organism = a living thing that has (or can develop) the ability to act or function independently
    • more specific terms:
      • monad = a single-celled microorganism
      • intestinal flora = harmless microorganisms (as Escherichia coli) that inhabit the intestinal tract and are essential for its normal functioning
      • virus = ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic
      • moneran / moneron = organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesis
      • bacterium / bacteria = single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult
      • microbe / germ / bug = a minute life form
      • pathogen = any disease-producing agent
      • protoctist = any of the unicellular protists
      • protistan / protist = free-living or colonial organisms with diverse nutritional and reproductive modes
      • microflora = microscopic plants
    • part: pilus = hairlike structure especially on the surface of a cell or microorganism

Printed dictionaries and other books with definitions for Micro-Organism

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Google previewBlack’s Medical Dictionary (2017)

by Harvey Marcovitch

Micro-Organism. A very small, single-celled living organism that cannot usually be seen by the naked eye. The most important micro-organisms in medicine are those that cause disease. This 'pathogenic' group, however, forms only a small ...

Google previewA Dictionary of Ecology (2015)

by Michael Allaby

See also MICRO-ORGANISM. microbial (microbic) Of or pertaining to *micro-organisms. microbial ecology The *ecology of micro-organisms, including ...

Google previewDictionary of Water and Waste Management (2005)

by Paul G Smith

microbe Micro-organism. microbial film A biofilm. microbial growth ...

Google previewDictionary of Biomedical Science (2002)

by Peter J. Gosling

Imprecise term for any MICRO-ORGANISM. microbiology ( microbiology) ...

Google previewDictionary of English Spelling (2005)

by Martin H. Manser

tiny; one-millionth microsecond microbe micro-organism; germ microbiology study of micro-organisms microbiological microbiologist microchip tiny ...

Google previewUnited Editors Encyclopedia and Dictionary (1907)

A Library of Universal Knowledge and an Unabridged Dictionary of the English Language ...

micro-organism. must. always. be. found. in. this. disease. (2) When found it must be capable of being isolated and grown in pure culture. (3) On being inoculated into another animal or plant capable of having the disease, this organism must ...

Google previewEncyclopaedic Dictionary of Biotechnology (2005)

Antiseptic : Any substance that kills or inhibits the growth of disease-causing micro-organism (a micro-organism capable of causing sepsis), but is essentially non-toxic to cells of the body. Antiserum : Blood serum containing specific antibodies ...

Google previewBailliere's Midwives' Dictionary E-Book (2017)

by Denise Tiran

microbe micro-organism, pathogenic bacterium. Adjmicrobial. microcephaly abnormally small head with ossified skull bones; baby will have learning difficulties.

Google previewGreen's Encyclopedia and Dictionary of Medicine and Surgery (1908)

by John William Ballantyne

Whichever micro-organism be the cause of any type of suppuration it usually gains entrance ...

Google previewThe Dictionary of Unfamiliar Words (2008)

by Diagram Group

micro-organism A very small organism, e.g. a protist or bacterium. mimicry The adoption by one species of the structure or behavior of another to gain protection. mitochondrion (pl. mitochondria) A rod-shaped organelle ...

Google previewA Dictionary of Dentistry (2010)

by Robert Ireland

See MICRO-ORGANISM. microbiologist n. A scientist or clinician who specializes in the field of * microbiology. microbiology n. The study of *micro-organisms, including * prokaryotes such as bacteria, ...

Google previewEncyclopaedia medica (1902)

by Chalmers Watson

Whichever micro-organism lie the cause of any type of suppuration it usually gains entrance ...

Google previewChurchill Livingstone Medical Dictionary (2008)

by Chris Brooker

acid-alcohol-fast adj in microbiology, describes a micro-organism which, when stained, is resistant to decolorization by alcohol as well as acid, e.g. Mycobacterium tuberculosis. Þ Ziehl–Neelsen technique.

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"life cycle of a micro-organism"

Photo credit: Perry French

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