What does "external respiration" mean?

the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation

What is a synonym for "external respiration"?

Common synonyms include: breathing, respiration, ventilation.

Rare ·Advanced level

Noun

1
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation wordnet