ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  systema respiratorium - 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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