Circle to the right as an alternative (5)

I believe the answer is:

other

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'an alternative' is the definition.
(I've seen this before)

'circle to the right as' is the wordplay.
'circle' becomes 'O' (O is a circle).
'right as' becomes 'r' (abbreviation. I am not sure about the 'as' bit.).
'o'+'the'+'r'='OTHER'

Can you help me to learn more?

(Other definitions for other that I've seen before include "Different, not the same one or this one" , "Alternate; additional" , "Very unusual" , "Different (from those mentioned)" , "Different; additional" .)

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

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