noun
scuba
SKOO-buh
noun
1
Diving equipment consisting of a compressed-air tank and regulator, allowing a diver to breathe underwater independently.
"They rented scuba gear for the reef dive."
"She got her scuba certification last summer."
verb
1
To dive using scuba equipment.
"We scubaed along the coral reef for an hour."
How to Use Scuba
Learner’s notesIn plain EnglishUnderwater breathing gear, or the act of diving with it.
Common pairings
scuba diving
scuba gear
go scuba diving
Word Forms
scubaed past tense, scubas plural, scubas singular
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Etymology
Originally an acronym for "self-contained underwater breathing apparatus," now used as an ordinary word without anyone spelling it out.