Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A scuba diver trained to work in underwater installations and conduct, assist in, or be a subject of scientific research. Also called oceanaut.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An underwater explorer.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an underwater swimmer equipped with a face mask and foot fins and either a snorkel or an air cylinder
  • n. a skilled worker who can live in underwater installations and participate in scientific research

Etymologies

aqua- + Greek nautēs, sailor; see nāu- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
aqua- + -naut (Wiktionary)

Examples

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