mi·​cro·​bi·​o·​ta ˌmī-krō-bī-ˈō-tə How to pronounce microbiota (audio)
: the microscopic organisms of a particular environment : microbiome sense 1
It's very possible that the master key to unlocking chronic disease will turn out to be the health and composition of the microbiota in your gut.Michael Pollan and Ruth Reichl
microbiotic adjective
the microbiotic environment of the gut

Examples of microbiota in a Sentence

Recent Examples on the Web After One Week Alcohol consumption is thought to cause gut inflammation and alter the gut microbiota. Stephanie Brown, Verywell Health, 18 Jan. 2024 Almost three quarters of the study’s participants identified as Black, a population which has a higher risk of vaginal dysbiosis—the scientific term for an imbalance in vaginal microbiota. Lori Youmshajekian, Scientific American, 6 Dec. 2023 Past research has identified two specific imbalances of the vaginal microbiota that commonly lead to bacterial vaginosis. Lori Youmshajekian, Scientific American, 6 Dec. 2023 The gut microbiota has emerged as a critical factor in the development of obesity, with the gut making 50% of our dopamine, 90% serotonin, and 70% of our immune cells. James Robinson, Discover Magazine, 30 Nov. 2022 Moreover, research is showing that probiotics may have a positive impact on autism by maintaining a healthy gut microbiota. Amber Smith, Discover Magazine, 20 June 2023 These microbiota work together harmoniously to support various bodily processes, including:2 Metabolism Nutrition Physiology Immune function Factors including diet, certain medications, and illness can impact the balance of good and bad bacteria in your gut. Andrea Michelson, Verywell Health, 31 Aug. 2023 Research has shown that individuals with autism spectrum disorder may suffer from imbalances in their gut microbiota, leading to digestive problems and other health concerns. Amber Smith, Discover Magazine, 20 June 2023 Studies have identified a potential influence of gut microbiota on future treatments for IBS, but more research is needed to get there. Andrea Michelson, Verywell Health, 17 July 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'microbiota.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


micro- + biota

First Known Use

1914, in the meaning defined above

Time Traveler
The first known use of microbiota was in 1914

Dictionary Entries Near microbiota

Cite this Entry

“Microbiota.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microbiota. Accessed 23 Feb. 2024.

Medical Definition


mi·​cro·​bi·​o·​ta -bī-ˈōt-ə How to pronounce microbiota (audio)
: the microscopic organisms of a particular environment : microbiome sense 1
The more we learn about our microbiota, however, the more we realize how easy it is for helpful microbes to get caught in the line of fire between an antibiotic and its intended target.Nathan Wolfe, National Geographic
… the microbiota on the tongue differ from those species living in plaque on teeth.Mel Rosenberg, Scientific American
microbiotic adjective
microbiotic life
Last Updated: - Updated example sentences
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