Crossword Genius

Any promotion reported to be needed for group of nine? (6)

Ross

I believe the answer is:

ennead

I'm a little stuck... Click here to teach me more about this clue!

'for group of nine?' is the definition.
(I've seen this before)

'any promotion reported to be' is the wordplay.
I cannot quite understand how this works, but
'promotion' could be 'ad' (short for advert) and 'ad' is present in the answer.
This explanation may well be incorrect...

'needed' is the link.

Can you help me to learn more?

(Other definitions for ennead that I've seen before include "The Muses, say" , "Group of nine (rare); Anne, Ed (anag.)" , "Need an alteration for a set ofnine" , "Baseball team, perhaps" , "Series of nine" .)

I've seen this clue in The Telegraph.
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