external respiration

n.
The exchange of oxygen and carbon dioxide between the environment and respiratory organs such as gills or lungs.

n

Ventilation of the lungs and oxygenation of the blood.

Ventilation and gaseous exchange; the process of drawing air into the lungs and the exchange of gases between the alveoli and the blood capillaries. Compare cellular respiration.

n.

The exchange of respiratory gases in the lungs.

Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
  Synonyms: breathing, respiration, ventilation

---