from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A scuba diver trained to work or take part in scientific research in underwater installations.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An underwater explorer.

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

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


from Wiktionary, Creative Commons Attribution/Share-Alike License

aqua- + -naut


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