Standard Lemma guide

aquanaut

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • CMU ARPABET: AA1 K W AH0 N AA2 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

An underwater explorer.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: hydronaut

Antonyms: none provided

2

noun

Meaning 2

a skilled worker who can live in underwater installations and participate in scientific research

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: oceanaut

Antonyms: none provided

Broader terms: skilled worker, trained worker, skilled workman

3

noun

Meaning 3

an underwater swimmer equipped with a face mask and foot fins and either a snorkel or an air cylinder

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: skin-diver

Antonyms: none provided

Broader terms: swimmer, natator, bather

History

Etymology

From aqua- + -naut.

Across languages

Translations

7 source translations are retained for this English entry.

  • Greek: υδροναύτης (ydronáftis) — underwater explorer
  • Italian: acquanauta — underwater explorer
  • Polish: akwanauta — underwater explorer
  • Portuguese: aquanauta — underwater explorer
  • Serbo-Croatian: акванаут — underwater explorer
  • Serbo-Croatian: akvanaut — underwater explorer
  • Spanish: acuanauta — underwater explorer