An organism that can be seen only with the aid of a microscope and that typically consists of only a single cell. Microorganisms include bacteria, protozoans, and certain algae and fungi.
Any of various prokaryotic microorganisms of the domain Bacteria that may be free-living, saprophytic, commensal, or pathogenic and that vary widely in terms of morphology, oxygen tolerance, nutritional and temperature requirements, and motility.
Something that may serve as the basis of further growth or development:
Any of a division (Bacteria) of monerans, microorganisms which are typically one-celled, have no chlorophyll, multiply by simple division, and can be seen only with a microscope: they occur in three main forms, spherical (cocci), rod-shaped (bacilli), and spiral (spirilla): some bacteria cause diseases such as pneumonia and anthrax, and others are necessary for fermentation, nitrogen fixation, etc.
(Biol.) A plant or animal that lives on or in an organism of another species from which it derives sustenance or protection without benefit to, and usually with harmful effects on, the host
Find another word for microbe. In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for microbe, like: organism, bug, microorganism, bacterium, bacillus, germ, bacteria, parasite, beings, micro-organism and pathogen.