Partial inability to write in strange air gap, ah! (8)

I believe the answer is:

agraphia

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'partial inability to write' is the definition.
I can't judge whether this defines the answer.

'strange air gap ah' is the wordplay.
'strange' indicates anagramming the letters.
'air'+'gap'+'ah'='airgapah'
'airgapah' is an anagram of 'AGRAPHIA'.

'in' is the link.

Can you help me to learn more?

(Another definition for agraphia that I've seen is " Disorder leaving one unable to write".)

I've seen this clue in the Sydney Morning Herald.

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