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Table 2 Microbiome/microbiota etymology

From: Microbiome definition re-visited: old concepts and new challenges

 The words “micro” and “biome” are of Ancient Greek origin. “Micro” (μικρος) means small, while the term “biome” is composed of the Greek word bíos (βιος, life) and modified by the ending “ome” (Anglicization of Greek).
 The words “micro” and “biota” are also of Ancient Greek origin. It is a combination of “Micro” (μικρος, small), with the term “biota” (βιοτα), which means the living organisms of an ecosystem or a particular area.