Question

micro-organism

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Merriam-Webster's Collegiate Dictionarymi·cro·or·gan·ism \-ˈȯr-gə-ˌni-zəm\ noun ETYMOLOGY International Scientific Vocabulary DATE 1880: an organism (as a bacterium or protozoan) of microscopic or ultramicroscopic sizeEnglish Etymologymicroorganism 1880, coined in Eng. from micro- + organism.Oxford Advanced Learner's Dictionary-牛津双解-OALD7micro-organismmicro-organ·ism / 7maikrEu5C:^EnizEm; NAmE 7maikrou5C:r^- / noun (technical 术语) a very small living thing that you can only see under a microscope 微生物Webster's Third New International Dictionary, Unabridgedmi·cro·organism\“+\ nounEtymology: International Scientific Vocabulary micr- + organism: an organism of microscopic or ultramicroscopic size — used especially of bacteria and protozoa < soil-inhabiting microorganisms — S.A.Waksman >Synonyms: germ, microbe, bacterium, bacillus, virus, pathogen: microorganism is the general term for any organism of microscopic or ultramicroscopic size. germ and microbe are early nonscientific synonyms for microorganism. germ often refers to microorganisms regarded as a source or origin (as of a disease) < typhus germs > It is often used to indicate a rudimentary beginning or embryo capable of evolving or developing < germs of the doctrine of which he is the founder may be traced to much earlier, even ancient periods — Encyc. Americana > microbe may be somewhat more awesome than germ and is rarely used with pleasing suggestion < the late stage of true invasion of the tissues around the brain and spinal cord by the deadly microbes — F.G.Slaughter > bacterium is now the common scientific designation for a large group of microscopic plants with single-celled or acellular bodies of various forms that affect the life of man in various ways. bacteria is sometimes used to designate rod-shaped bacteria that do not form endospores and is contrasted with bacillus in its narrow sense. bacillus in science refers to any straight rod-shaped bacterium or to any straight aerobic rod-shaped bacterium that forms endospores; popularly it refers to various disease-causing bacteria < the bacilli of diphtheria > virus technically indicates a submicroscopic infective agent sometimes considered as composed of complex protein molecules capable of growth in living cells < polio virus > virus is applicable to any dread, insidious, inexorable agent < right in claiming that the virus of Pan-Germanism and Nazism was present in the speeches — Times Literary Supplement > pathogen is applicable to any living agent that causes disease (as a bacterium, virus, fungus, or worm); it stresses this aspect and implies nothing about relative size, being freely applied to agencies that are not microorganisms < many pathogens attack a vigorous host most readily — Science>

Is Organism Microscopic Noun Scientific Bacterium Ultramicroscopic Living