adjective
undersea
adjective
1
Existing or taking place beneath the surface of the sea.
"The documentary explored an undersea volcano off the coast of Japan."
How to Use Undersea
Learner’s notesIn plain EnglishLocated or happening below the surface of the ocean.
Common pairings
undersea cable
undersea volcano
undersea exploration
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The documentary explored an _____ volcano off the coast of Japan.
Etymology
From under- plus sea.