noun ·3 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   An underwater explorer.
2. 2
   a skilled worker who can live in underwater installations and participate in scientific research wordnet
3. 3
   an underwater swimmer equipped with a face mask and foot fins and either a snorkel or an air cylinder wordnet

Synonyms

All synonyms

oceanautskin diverskin-diver

Etymology

From aqua- + -naut.

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