microorganism
has definitions from the field of biology
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[ noun ] (biology) any organism (animal or plant) of microscopic size
Used in print (Walter H. Buchsbaum, "Advances in Medical Electronics"...)Many cells , bacteria , and other microorganisms are transparent to visible_light and must be stained for microscopic investigation . Many_of the cells and microorganisms which are transparent to visible_light , absorb or reflect the much shorter wavelengths of the ultraviolet_spectrum . |
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