Crossword Genius

Two islands that exploded in South Seas location (6)

Ross

I believe the answer is:

tahiti

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'south seas location' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

'two islands that exploded' is the wordplay.
'two islands' means two substitutions for 'island'.
'island' becomes 'i' (geographical abbreviation).
'island' becomes 'i' (geographical abbreviation).
'exploded' indicates an anagram.
'i'+'i'+'that'='iithat'
'iithat' with letters rearranged gives 'TAHITI'.

'in' is the link.

Can you help me to learn more?

(Other definitions for tahiti that I've seen before include "South Pacific island, linked to Paul Gauguin and Robert Louis Stevenson" , "part of Polynesia" , "South Pacific island where both Robert Louis Stevenson and Paul Gauguin spent time" , "Society member" , "French Polynesian island" .)

I've seen this clue in The Sun.
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