Artist with face somehow beaming? (6)

I believe the answer is:

radial

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'somehow beaming?' is the definition.
I can't judge whether this definition defines the answer.

'artist with face' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'with' is a charade indicator (letters next to each other).
'face' becomes 'dial' (face of a clock).
'ra'+'dial'='RADIAL'

Can you help me to learn more?

(Other definitions for radial that I've seen before include "Type of car tyre" , "spoke" , "Having spokes that branch out from a centre" , "Arranged like wheel spokes" , "tire (American)" .)

I've seen this clue in The Guardian.

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