Squeeze in to tank having larger dimensions than normal (5-4)

I believe the answer is:

queen-size

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'normal' is the definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I don't see?

'squeeze in to tank having larger dimensions' is the wordplay.
'squeeze in' anagrams to 'QUEEN-SIZE'.
But, I'm not sure how the anagram is indicated.

'than' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times.

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