Crossword Genius

Cycling itinerary further from centre (5)

Ross

I believe the answer is:

outer

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'further from centre' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for outer that I've seen before include "On the periphery" , "Objective" , "External; peripheral" , "Exterior or external, like space" , "Poor shot" .)

I've seen this clue in The Telegraph.
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