metabolism

noun
me·​tab·​o·​lism | \ mə-ˈta-bə-ˌli-zəm How to pronounce metabolism (audio) \

Definition of metabolism

1a : the sum of the processes in the buildup and destruction of protoplasm specifically : the chemical changes in living cells by which energy is provided for vital processes and activities and new material is assimilated (see assimilate entry 1 sense 1b) Regular exercise can help to increase your metabolism.
b : the sum of the processes by which a particular substance is handled in the living body
c : the sum of the metabolic activities taking place in a particular environment the metabolism of a lake
2 : metamorphosis sense 2 usually used in combination holometabolism

Examples of metabolism in a Sentence

studying the metabolisms of various organisms
Recent Examples on the Web Malavin: The main mechanism actually is the suspension of animation, the suspension of metabolism up to almost zero or maybe zero state. Karen Hopkin, Scientific American, 17 Aug. 2021 Free radicals form as a byproduct of normal metabolism and in response to exercise, sun exposure, and environmental pollutants like smog and cigarette smoke. Cynthia Sass, Mph, Health.com, 10 June 2021 One of the best measures of running fitness is lactate threshold (LT), which is the running speed or heart rate at which lactate — an intermediate product of aerobic metabolism in the muscles — begins to accumulate rapidly in the bloodstream. Matt Fitzgerald, Outside Online, 2 Nov. 2020 Caffeine aids in the usage of more fat as energy by increasing the speed of bodily metabolism. The Salt Lake Tribune, 25 May 2022 The winter quarters were actually chambers that could gauge oxygen intake and carbon dioxide production, important measures of metabolism, while sensors tracked body temperature. Chris Woolston, Smithsonian Magazine, 15 Apr. 2022 Free radicals occur naturally in the body as a byproduct of cell metabolism, but levels can be raised by exposure to smoking, environmental toxins, pesticides, dyes and air pollution. Sandee Lamotte, CNN, 1 Mar. 2022 The process of metabolism is carried out through the action of a globular proteins known as enzymes. Erik Kobayashi-solomon, Forbes, 24 Sep. 2021 And what is the link between the decline of metabolism around 60 and the corresponding increase in chronic disease? New York Times, 14 Sep. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'metabolism.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of metabolism

1878, in the meaning defined at sense 1a

History and Etymology for metabolism

metabol(ic) + -ism, after French métabolisme or German Metabolismus

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Time Traveler for metabolism

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The first known use of metabolism was in 1878

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Dictionary Entries Near metabolism

metabolic syndrome

metabolism

metabolite

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Statistics for metabolism

Last Updated

4 Aug 2022

Cite this Entry

“Metabolism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/metabolism. Accessed 14 Aug. 2022.

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More Definitions for metabolism

metabolism

noun
me·​tab·​o·​lism | \ mə-ˈta-bə-ˌli-zəm How to pronounce metabolism (audio) \

Kids Definition of metabolism

: the processes by which a living organism uses food to obtain energy and build tissue and disposes of waste material

metabolism

noun
me·​tab·​o·​lism | \ mə-ˈtab-ə-ˌliz-əm How to pronounce metabolism (audio) \

Medical Definition of metabolism

1a : the sum of the processes in the buildup and destruction of protoplasm specifically : the chemical changes in living cells by which energy is provided for vital processes and activities and new material is assimilated methods of determining body and tissue metabolism Bulletin of the University of Kentucky — see anabolism, catabolism
b : the sum of the processes by which a particular substance is handled (as by assimilation and incorporation or by detoxification and excretion) in the living body the metabolism of iodine in the thyroid
2 : metamorphosis sense 2 usually used in combination holometabolism

More from Merriam-Webster on metabolism

Nglish: Translation of metabolism for Spanish Speakers

Britannica English: Translation of metabolism for Arabic Speakers

Britannica.com: Encyclopedia article about metabolism

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