scuba
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scu·ba
(sko͞o′bə)n.
A portable apparatus having a container with compressed air, a regulator that is equipped with a mouthpiece and adjusts the pressure of the released air to match the surrounding pressure, and often a buoyancy compensator, used for breathing under water.
[s(elf-)c(ontained) u(nderwater) b(reathing) a(pparatus).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
scuba
(ˈskjuːbə)n
(Swimming, Water Sports & Surfing)
a. an apparatus used in skindiving, consisting of a cylinder or cylinders containing compressed air attached to a breathing apparatus
b. (as modifier): scuba diving.
[C20: from the initials of self-contained underwater breathing apparatus]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
scu•ba
(ˈsku bə)n., pl. -bas, n.
1. a portable breathing device for free-swimming divers, consisting of a mouthpiece joined by hoses to one or two tanks of compressed air that are strapped on the back.
v.i. 2. to scuba-dive.
[1950–55; s(elf)-c(ontained) u(nderwater) b(reathing) a(pparatus)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Noun | 1. | ![]() breathing apparatus, breathing device, breathing machine, ventilator - a device that facilitates breathing in cases of respiratory failure cylinder - a cylindrical container for oxygen or compressed air oxygen mask - a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank |
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