respiratory organ

Thesaurus

Noun

1.

respiratory organ - any organ involved in the process of respiration branchia, gill - respiratory organ of aquatic animals that breathe oxygen dissolved in water internal organ, viscus - a main organ that is situated inside the body lung - either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood respiratory system, systema respiratorium - the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing book lung - organ in many arachnids containing many thin folds of membrane resembling the leaves of a book