Definition of scuba-diving noun from the Oxford Advanced Learner's Dictionary

scuba-diving

noun

ˈskuːbə daɪvɪŋ scuba-diving pronunciation American

ˈskuːbə daɪvɪŋ

(also scuba) [uncountable]

the sport or activity of swimming underwater using special breathing equipment consisting of a container of air which you carry on your back and a tube through which you breathe the air

to go scuba-diving