Origin of aqualungfrom Aqua-Lung, a trademark: see Aqua-Lung
(third-person singular simple present aqualungs, present participle aqualunging, simple past and past participle aqualunged)
- To scuba dive.
The term Aqua-Lung is a registered trademark
Aqualung was the original name for the first open-circuit SCUBA diving equipment by Emile Gagnan and Jacques Cousteau in 1943.