Really, really big (7)

I believe the answer is:

oceanic

'really really big' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for oceanic that I've seen before include "Relating to large areas of sea" , "Pertaining to the sea" , "Relating to, eg, Atlantic or Pacific" , "overwhelming" , "Relating to great seas" .)

I've seen this clue in The New York Times.

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