noun, verb ·3 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   A piece of equipment consisting of an oxygen tank and breathing apparatus used by divers to allow them to breathe underwater.
2. 2
   a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus wordnet

Verb

1. 1
   To scuba dive.

Synonyms

All synonyms

aqua-lungscubawet suit

Etymology

Aqualung was the original name for the first open-circuit SCUBA diving equipment by Emile Gagnan and Jacques Cousteau in 1943. From aqua- + lung.

Related phrases

at depthscuba diving

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.