Intend it to revert to me until then (8)

I believe the answer is:

meantime

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'until then' is the definition.
I can't judge whether this defines the answer.

'intend it to revert to me' is the wordplay.
'intend' becomes 'mean' (synonyms).
'to revert' says the letters should be written in reverse.
'to' means one lot of letters go next to another.
'it' reversed gives 'ti'.
'mean'+'ti'+'me'='MEANTIME'

Can you help me to learn more?

(Other definitions for meantime that I've seen before include "interval" , "Intervening period" , "interim?" , "For the moment" .)

I've seen this clue in the Evening Standard.

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