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.
In the Dutch Caribbean territory of St. Maarten, crews with backhoes were dispatched in late May as part of an emergency clean-up after residents complained of strong smells of ammonia and hydrogen sulfide, which can affect a person’s respiratory system. Danica Coto, Christian Science Monitor, 4 June 2025 Additionally, a 2015 systematic review of studies involving wildfires and human health in communities found wildfire smoke was significantly associated with risk of respiratory morbidity, meaning diseases and conditions that affect the respiratory system. Mary Kekatos, ABC News, 4 June 2025 And people need to know that, especially for those with babies and young children, because their respiratory system is an essential part of their development. Victoria Uwumarogie, Essence, 30 May 2025 This provider can be a primary care provider, an allergist (treats allergies and other conditions of the immune system), or a pulmonary specialist (treats conditions of the lungs and respiratory system). Daniel More, Verywell Health, 2 Apr. 2025 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

Browse Nearby Words

Cite this Entry

“Respiratory system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/respiratory%20system. Accessed 12 Jun. 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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