respiration

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noun res·pi·ra·tion \ ˌres-pə-ˈrā-shən \

Definition of respiration

1 a :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

respiratory

play \ˈres-p(ə-)rə-ˌtȯr-ē, ri-ˈspī-rə-\ adjective

Examples of respiration in a Sentence

  1. The doctor checked his heartbeat and respiration.

Recent Examples of respiration from the Web

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.

Origin and Etymology of respiration

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

Other Physiology Terms



RESPIRATION Defined for English Language Learners

respiration

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noun

Definition of respiration for English Language Learners

  • medical : the act or process of breathing


RESPIRATION Defined for Kids

respiration

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

Definition of respiration for Students

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

Medical Dictionary

respiration

play
noun res·pi·ra·tion \ ˌres-pə-ˈrā-shən \

medical Definition of respiration

1 a :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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