Spread out and blow up (7)

I believe the answer is:

enlarge

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This could be a double definition.

'spread out' is the first definition.
'enlarge' can be an answer for 'spread' (thesaurus). I'm not certain of the 'out' bit.

'blow up' is the second definition.
(synonyms)

'and' is the link.

Can you help me to learn more?

(Other definitions for enlarge that I've seen before include "Lengthen" , "Make big" , "Make bigger in general" , "Amplify" , "Make bigger, say photo" .)

I've seen this clue in The Globe and Mail.

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