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

With limited activity there is limited respiration so 1) the roots don’t produce much CO2 and 2) the roots don’t need as much O2. Paul Cappiello, The Courier-Journal, "There's no such thing as 'average' Kentucky weather. And trees hate that," 13 July 2018 For example, propofol, an anesthetic that reduces consciousness, may cause drops in blood pressure or respiration, but these are expected side effects. Ronald S. Litman, Philly.com, "Should I worry about my child being allergic to anesthesia?," 9 July 2018 One of the pathways that's inhibited is the tricarboxylic acid cycle, or Krebs cycle, which is how cells generate energy through aerobic respiration. Diana Gitig, Ars Technica, "Sugar cures cancer! (Not really, but one sugar may help chemo)," 21 Nov. 2018 Scientists are hard at work trying to perfect apps that can measure your heart and respiration rates, perform blood and saliva tests—even evaluate your cough. Pm Editors, Popular Mechanics, "110 Predictions For the Next 110 Years," 10 Dec. 2012 Though the numbers alone are breathtaking, there’s something else affecting our respiration: the air quality, which, yesterday in San Francisco, became among the worst in the world. Calin Van Paris, Vogue, "For Those Grappling With California Wildfires, Dangerous Air Quality Is a New Risk," 16 Nov. 2018 Further, instructions for handling require precautionary measures for handling chemicals and suggest wearing protective respiration gear, gloves, and safety glasses. Emma Sarran Webster, Teen Vogue, "Teenagers in Indonesia Are Reportedly Boiling Menstrual Pads to Get High," 15 Nov. 2018 Now fatal opioid overdoses, which can slow respiration to the point that the brain is starved of oxygen, are a growing part of that list. Ted Alcorn, Vox, "The waiting list for organ transplants is finally shrinking — for a grim reason," 24 Sep. 2018 The problem is one of aeration or, more specifically, matching root zone aeration to root respiration. Paul Cappiello, The Courier-Journal, "There's no such thing as 'average' Kentucky weather. And trees hate that," 13 July 2018

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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Statistics for respiration

Last Updated

6 Apr 2019

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Time Traveler for respiration

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

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More Definitions for respiration

respiration

noun

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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More from Merriam-Webster on respiration

Rhyming Dictionary: Words that rhyme with respiration

Spanish Central: Translation of respiration

Nglish: Translation of respiration for Spanish Speakers

Britannica English: Translation of respiration for Arabic Speakers

Britannica.com: Encyclopedia article about respiration

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