noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An explorer in a submarine.
2. 2
   a skilled worker who can live in underwater installations and participate in scientific research wordnet
3. 3
   Someone who lives or does scientific work underwater.

Synonyms

All synonyms

aquanautaquanaut

Etymology

From ocean + -naut, modelled on astronaut.

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