respiration

noun
res·​pi·​ra·​tion | \ ˌre-spə-ˈrā-shən How to pronounce respiration (audio) \

Definition of respiration

1a : the movement of air or dissolved gases into and out of the lungs
b : a single complete act of breathing … the patient was cyanotic and unconscious with labored respirations at 40/min.— Dorwyn W. Croom
2 : the physical and chemical processes (such as breathing and diffusion) by which an organism supplies its cells and tissues with the oxygen needed for metabolism and relieves them of the carbon dioxide formed in energy-producing reactions

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Other Words from respiration

respiratory \ ˈre-​sp(ə-​)rə-​ˌtȯr-​ē How to pronounce respiratory (audio) , ri-​ˈspī-​rə-​ \ adjective

Examples of respiration in a Sentence

The doctor checked his heartbeat and respiration.
Recent Examples on the Web Definitions for the processes of photosynthesis, respiration, transpiration and assimilation were particularly informative for me. Sally Peterson, oregonlive, "’The New Gardener’s Handbook” awakens intuitive skills, plant passion," 30 June 2020 One image showed a big spike in his respiration rate. Hiawatha Bray, BostonGlobe.com, "Fitness bands may help in detecting COVID-19," 24 June 2020 The animals’ metabolic rate (measured by oxygen consumption), body temperature, heart rate and respiration all dropped. Simon Makin, Scientific American, "Switch in Mouse Brain Induces a Deep Slumber Similar to Hibernation," 15 June 2020 That's different than slow-twitch muscles, which rely on aerobic [with oxygen] respiration, meaning through the steady intake of oxygen, exercise can be sustained for a longer amount of time. Tiffany Ayuda, Health.com, "What Are Fast-Twitch Muscle Fibers and Why Is it Important to Keep Them Strong?," 15 June 2020 There's a significant overlap between it and hibernation, in that the mice's body temperature and activity drop, as do respiration and heart rate. John Timmer, Ars Technica, "Neurons discovered that put mice in a hibernation-like state," 14 June 2020 As a result of this combo, soil respiration rates doubled because organic matter-eating microbes were working double time in those pots, feasting on plant remains and exhaling carbon dioxide. Ula Chrobak, Popular Science, "Planting invasive species could make our carbon problem worse," 28 May 2020 Pulse, respirations, temperature: no worse, but no better. Emma Donoghue, The Atlantic, "The Blood Tax," 12 May 2020 People who need breathing tubes, which connect to mechanical ventilators that assist or take over respiration, are rarely in any shape to be on the phone because the level of oxygen in their blood has declined precipitously. New York Times, "What Doctors on the Front Lines Wish They’d Known a Month Ago," 14 Apr. 2020

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

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First Known Use of respiration

15th century, in the meaning defined at sense 1a

History and Etymology for respiration

Middle English respiracioun, from Latin respiration-, respiratio, from respirare

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Time Traveler for respiration

Time Traveler

The first known use of respiration was in the 15th century

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Statistics for respiration

Last Updated

4 Jul 2020

Cite this Entry

“Respiration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/respiration. Accessed 8 Aug. 2020.

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More Definitions for respiration

respiration

noun
How to pronounce respiration (audio)

English Language Learners Definition of respiration

medical : the act or process of breathing

respiration

noun
res·​pi·​ra·​tion | \ ˌre-spə-ˈrā-shən How to pronounce respiration (audio) \

Kids Definition of respiration

1 : the act or process of breathing : the inhaling of oxygen and the exhaling of carbon dioxide
2 : the process by which cells use oxygen to break down sugar and obtain energy

respiration

noun
res·​pi·​ra·​tion | \ ˌres-pə-ˈrā-shən How to pronounce respiration (audio) \

Medical Definition of respiration

1a : the movement of respiratory gases (as oxygen and carbon dioxide) into and out of the lungs
b : a single complete act of breathing 30 respirations per minute
2 : the physical and chemical processes (as breathing and diffusion) by which an organism supplies its cells and tissues with the oxygen needed for metabolism and relieves them of the carbon dioxide formed in energy-producing reactions

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