respiration

noun
res·pi·ra·tion | \ˌre-spə-ˈrā-shən \

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, ri-ˈspī-rə- \ adjective

Examples of respiration in a Sentence

The doctor checked his heartbeat and respiration.

Recent Examples on the Web

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 Apgar was an obstetric anesthetist who created the Apgar Score, a test for newborn babies that’s still used to this day (the test examines things such as the baby’s appearance, pulse, activity, and respiration). Sy Mukherjee, Fortune, "Brainstorm Health: CVS Aetna Management, 'Dog Flu' Risk, Virginia Apgar's Legacy," 7 June 2018 The five factors -- appearance, pulse, grimace, activity and respiration -- have been used countless times to help determine if a baby is healthy and happy. Mackenzie Cummings-grady, Billboard, "Google Doodle Celebrates 109th Birthday of Legendary Doctor Virginia Apgar," 7 June 2018 Opioid narcotics, such as fentanyl or morphine, have known side effects such as decreased respiration, nausea, or itching, but true allergies to opioids are also almost unheard of. Ronald S. Litman, Philly.com, "Should I worry about my child being allergic to anesthesia?," 9 July 2018 That was sufficient to raise their mitochondrial respiration to the levels observed in six-month-old mice, according to the study. David Noonan, Scientific American, "The Healthy Addiction? Coffee Study Finds More Health Benefits," 21 June 2018 Hypercapnia is excessive carbon dioxide in the blood, usually caused by inadequate respiration. Sig Christenson, San Antonio Express-News, "Commander halted Randolph training flights over pilots’ concerns," 28 June 2018 When administered, Naloxone can quickly restore normal respiration to someone whose breathing has slowed or stopped due to opioids. Debra Goldschmidt, CNN, "Naloxone recall due to particulate matter," 4 June 2018 The 1949 five-part test assessed a newborn’s heart rate, respiration, color, reflexes and muscle tone and was initially meant to be administered one minute after birth, though it was later used at the five- and 10-minute marks as well. Fiza Pirani, ajc, "Who was Virginia Apgar? Google honors trailblazing doctor who saved millions of babies," 7 June 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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Phrases Related to respiration

respiratory arrest

Statistics for respiration

Last Updated

21 Sep 2018

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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 \

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 \

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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