UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈskuːbə/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈskubə/ ,USA pronunciation: respelling(sko̅o̅bə)

Inflections of 'scuba' (nnoun: Refers to person, place, thing, quality, etc.): nplplural noun: Noun always used in plural form--for example, "jeans," "scissors.": scubas
Inflections of 'scuba' (v): (⇒ conjugate)
v 3rd person singular
v pres pverb, present participle: -ing verb used descriptively or to form progressive verb--for example, "a singing bird," "It is singing."
v pastverb, past simple: Past tense--for example, "He saw the man." "She laughed."
v past pverb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked."

WordReference Random House Learner's Dictionary of American English © 2020
scu•ba /ˈskubə/USA pronunciation   n., pl.  -bas, v.,  -baed, -ba•ing. 
  1. Sport[countable] a breathing device strapped on the back of a diver.
  2. Sport[uncountable] the act of swimming underwater with such a device.

v. [no object]
  1. Sportto swim underwater with such a device:to scuba in the Great Barrier Reef.

WordReference Random House Unabridged Dictionary of American English © 2020
scu•ba  (sko̅o̅bə),USA pronunciation n., v.,  scu•baed, scu•ba•ing. 
  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.
  2. SportSee  scuba diving. 

  1. Sportscuba-dive.
  • s(elf )-c(ontained) u(nderwater) b(reathing) a(pparatus) 1950–55

Collins Concise English Dictionary © HarperCollins Publishers::
scuba /ˈskjuːbə/ n
  1. an apparatus used in skindiving, consisting of a cylinder or cylinders containing compressed air attached to a breathing apparatus
Etymology: 20th Century: from the initials of self-contained underwater breathing apparatus
'scuba' also found in these entries (note: many are not synonyms or translations):
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