respiratory system

noun

: a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs : respiratory tract

Illustration of respiratory system

Illustration of respiratory system
  • 1 nostril
  • 2 nose
  • 3 nasal cavity
  • 4 nasopharynx
  • 5 oropharynx
  • 6 larynx
  • 7 trachea
  • 8 bronchus
  • 9 lung

Examples of respiratory system in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These include any virus that can affect the respiratory system, including influenza (flu) viruses, the adenovirus (similar to the common cold), RSV, human metapneumovirus and the coronavirus (COVID-19). Daryl Austin, USA Today, 25 May 2025 Your respiratory system's main job is to get oxygen into your blood and remove carbon dioxide. Carisa Brewster, Verywell Health, 24 Apr. 2025 Ethylene oxide can cause cancer and irritates the nervous and respiratory systems. Jenni Shearston, The Conversation, 25 Feb. 2025 May Prevent Coughs and Improve Airflow Carom seeds may offer respiratory system benefits. Lana Barhum, Verywell Health, 24 Oct. 2024 See All Example Sentences for respiratory system

Word History

First Known Use

1811, in the meaning defined above

Time Traveler
The first known use of respiratory system was in 1811

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Cite this Entry

“Respiratory system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/respiratory%20system. Accessed 30 May. 2025.

Kids Definition

respiratory system

noun
: a system of organs used in breathing that in human beings consists of the nose, nasal passages, pharynx, larynx, trachea, bronchi and lungs

Medical Definition

respiratory system

noun
: a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs : respiratory tract

More from Merriam-Webster on respiratory system

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