Crossword Genius

Learn when determined (9)

Ross

I believe the answer is:

ascertain

'learn' is the definition.
(I know that learn can be written as ascertain)

'when determined' is the wordplay.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'determined' becomes 'certain' (certain can mean determined or decided).
'as'+'certain'='ASCERTAIN'

(Other definitions for ascertain that I've seen before include "Learn" , "Become aware" , "Find out by making enquiries in sectarian way" , "Establish after an investigation or study" , "Find out for sure, determine" .)

I've seen this clue in The Guardian.
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