WordNet
external respiration
n. the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation [syn: breathing, respiration, ventilation]
Usage examples of "external respiration".
The sensors of his life-support system, having detected suitable air around him, automatically deactivated the gas-conversion macromolecules in the linings of his throat and nasal passages, and he went on external respiration.