| respiratory system n. The integrated system of organs involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment. |   |
respiratory system
n
(Life Sciences & Allied Applications / Anatomy) the specialized organs, collectively, concerned with external respiration: in humans and other mammals it includes the trachea, bronchi, bronchioles, lungs, and diaphragm
| respiratory system The system of organs and structures in which gas exchange takes place, consisting of the lungs and airways in air-breathing vertebrates, gills in fish and many invertebrates, the outer covering of the body in worms, and specialized air ducts in insects. |  |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  respiratory system - the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathingbody, organic structure, physical structure - the entire structure of an organism (an animal, plant, or human being); "he felt as if his whole body were on fire" system - a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion" respiratory tract, airway - the passages through which air enters and leaves the body respiratory organ - any organ involved in the process of respiration trachea - one of the tubules forming the respiratory system of most insects and many arachnids |
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