Crossword Genius

Vast region including New Zealand and Australia (7)

Ross

I believe the answer is:

oceania

(Other definitions for oceania that I've seen before include "Orwellian superstate" , "part of the world" , "Islands of the central and South Pacific" , "Large South Pacific region" , "Islands of Pacific and adjacent seas" .)

I've seen this clue in The Times.
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