from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A portable apparatus containing compressed air and used for breathing under water.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An apparatus carried by a diver, which includes a tank holding a mixture of oxygen and other gases, used for breathing underwater.
- v. To perform scuba diving.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus
s(elf-)c(ontained) u(nderwater) b(reathing) a(pparatus).(American Heritage® Dictionary of the English Language, Fourth Edition)
Acronym of self-contained underwater breathing apparatus (Wiktionary)