respiratory system


Definition of respiratory system

: 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

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 Although carbon dioxide is not a health hazard, many other pollutants that are harmful to the respiratory system, like particulate matter and nitrogen oxides, are typically emitted along with them. Drew Costley, ajc, 1 July 2022 Plus, long-term exposure has been linked to cancer as well as multiple organ damage, including the kidneys and respiratory system. Grooming Playbook, The Salt Lake Tribune, 7 Apr. 2022 The chemical affects the central nervous system, the cardiovascular system and the respiratory system. Orlando Mayorquin, USA TODAY, 8 Mar. 2022 In this scenario, SARS-CoV-2 evolves to infect new cell types in the human body, changing from predominantly infecting and affecting the respiratory system to infecting and affecting other organ systems. Donald S. Burke, STAT, 18 Feb. 2022 By April 2020, the U.S. began seeing around 1,000 deaths a day as hospitals filled up with patients, and doctors and nurses were unsure how best to treat the tricky virus, which attacks everything from the respiratory system to the brain and heart. Julie Mazziotta,, 12 May 2022 Most deaths associated with H5N1 viruses were caused by severe pneumonia and a collapse of the respiratory system, Dr. Webby said. Renée Onque, WSJ, 29 Apr. 2022 The filters separate out particles by size so research teams can hone in on only the components of dust that can get into the respiratory system. Stephanie Innes, The Arizona Republic, 29 Apr. 2022 Like an opioid, xylazine can depress the respiratory system, so the risk of overdose multiplies when it's combined with heroin or fentanyl. Nadia Kounang, CNN, 17 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'respiratory system.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of respiratory system

1811, in the meaning defined above

Learn More About respiratory system

Time Traveler for respiratory system

Time Traveler

The first known use of respiratory system was in 1811

See more words from the same year

Dictionary Entries Near respiratory system

respiratory syncytial virus

respiratory system

respiratory tract

See More Nearby Entries 

Statistics for respiratory system

Last Updated

4 Aug 2022

Cite this Entry

“Respiratory system.” Dictionary, Merriam-Webster, Accessed 17 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for respiratory system

respiratory system


Kids Definition of respiratory system

: a system of the body used in breathing that in human beings consists of the nose, nasal passages, pharynx, larynx, trachea, bronchial tubes, and lungs

respiratory system


Medical Definition of respiratory system

: 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

Britannica English: Translation of respiratory system for Arabic Speakers Encyclopedia article about respiratory system


Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!