scuba diving

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scuba diving noun
scuba diving
noun
Learner's definition of SCUBA DIVING
[noncount]
: a sport or activity in which you swim underwater using an air tank and a special breathing machine that you strap on your body

— scuba dive

verb scuba dives; scuba dived; scuba diving [no object]

— scuba diver

noun, plural scuba divers [count]