Crossword Genius

Extremely ambitious area including India? (4)

Ross

I believe the answer is:

asia

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'extremely ambitious area including india?' is the definition.
I can't tell whether this defines the answer.

'extremely ambitious area including india?' is the wordplay.
'extremely' suggests removing the centre (only the extremes of the word are used).
'area' becomes 'a' (maths abbreviation).
'including' means one lot of letters goes inside another.
'india?' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'ambitious' with its centre taken out is 'as'.
'as'+'a'='asa'
'asa' going around 'i' is 'ASIA'.

Can you help me to learn more?

(Other definitions for asia that I've seen before include "Continent bordering three oceans" , "huge amount of ground" , "Put out" , "its pampered jades couldn't draw much?" , "Large continent" .)

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