(microbiology) Any microorganism, but especially a harmful bacterium.
The genetic information (genomes) of a microbiota.
A microscopic organism; a microorganism; - particularly applied to bacteria and especially to pathogenic forms; as, the microbe of fowl cholera.
A microbial biome, such as the community of microbes within the human gut.
a minute life form (especially a disease-causing bacterium); the term is not in technical use
The word microbiome (from the Greek micro meaning and bíos meaning ) was first used by J.L. Mohr in 1952 in The Scientific Monthly to mean the microorganisms found in a specific environment. It was defined in 1988 by Whipps et al.