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

When taken in uncontrolled concentrations by unsuspecting users, or by users whose opioid tolerance has not been heightened by long-term use, the drug is more likely even than prescription opioids to suppress respiration and cause death. Los Angeles Times, "Tyler Skaggs’ autopsy: Fentanyl, oxycodone and alcohol led to death by choking on vomit," 30 Aug. 2019 During respiration, the hyoid is what keeps the airway open. Morgan Hines, USA TODAY, "What can a tiny bone tell us about Jeffrey Epstein's death?," 10 Aug. 2019 The lab has technology that analyzes facial expressions, skin responses, heart and respiration rates, eye-tracking and neural signals to help researchers learn how emotional responses drive decision-making. Lynn Brezosky, ExpressNews.com, "Study: Richer or poorer, cheaters cheat," 31 July 2019 And, as in sleep lab studies, the headband also tracks head movement, heart rate, and respiration, relying on sound recordings and a miniature accelerometer like those found in smartphones. Kelly Mayes, Science | AAAS, "Brain-monitoring headbands could track your sleep as well as a sleep lab," 10 July 2019 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 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 scoring system, which has since saved countless babies, evaluates newborns' health on five factors: heart rate, respiration, skin color, muscle tone, and reflexes. Jessie Yeung, CNN, "Virginia Apgar, the pioneer of neonatal health," 7 June 2018 By measuring blood pressure and respiration, the polygraph machine could tell when a subject was lying. Peter Rowe, sandiegouniontribune.com, "The truth about lying: we live in a golden age of lies — and lie-detecting," 28 May 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

7 Sep 2019

Look-up Popularity

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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