• synonyms


or Aq·ua Lung

[ak-wuh-luhng, ah-kwuh-]
  1. a brand of underwater breathing apparatus for a swimmer or skin-diver, consisting of a cylinder of compressed air that is strapped to the back, a flexible tube connecting the cylinder with the swimmer's mouth, and an automatic pressure regulator that controls the flow of air into the lungs.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for aqualung

Historical Examples

  • He was suddenly impatient to get going, to put on his aqualung and explore the reef from top to bottom.

    The Wailing Octopus

    Harold Leland Goodwin

British Dictionary definitions for aqualung


  1. breathing apparatus used by divers, etc, consisting of a mouthpiece attached to air cylinders strapped to the back
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for aqualung


1950, from aqua- + lung. Developed 1943 by Jacques Cousteau and Emile Gagnan.

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Online Etymology Dictionary, © 2010 Douglas Harper