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

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

Brooms get at crumbs, but to rein in the teeny-tiny particles that irritate your respiratory system, swab down or squeegee once a week. —Nashia Baker, Martha Stewart, 19 Feb. 2026

This classic scent provides a minty fresh sensation that promotes clear breathing and a healthy respiratory system. —Bestreviews, Mercury News, 16 Feb. 2026

Additionally, bleach can be harmful to your skin and respiratory system if not used properly. —Daley Quinn, Southern Living, 12 Feb. 2026

If left untreated, hypothermia can cause heart and respiratory system failure, and eventually death. —Alexis Simmerman, Austin American Statesman, 26 Jan. 2026

Word History

First Known Use

1811, in the meaning defined above

Rhymes for respiratory system

• cryptosystem
• ecosystem
• intersystem
• multisystem
• photosystem
• subsystem

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