Half the disc covers poetry in variety (7)

I believe the answer is:

diverse

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'half the disc covers poetry in variety' is the definition.
I can't tell whether this definition defines the answer.

'half the disc covers poetry' is the wordplay.
'half the' indicates taking half.
'covers' says to put letters next to each other.
'poetry' becomes 'verse' (synonyms).
'disc' cut in half is 'di'.
'di'+'verse'='DIVERSE'

Can you help me to learn more?

(Other definitions for diverse that I've seen before include "Revised, being of different kinds" , "Many and varied" , "Many and various" , "Different and various" , "Showing variety" .)

I've seen this clue in The Irish Independent.

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