Like some worms in gent's meal unfortunately (9)

I believe the answer is:

segmental

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'like some worms in' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?

'gent's meal unfortunately' is the wordplay.
'unfortunately' indicates an anagram (a bad or unfortunate spelling).
'gents'+'meal'='gentsmeal'
'gentsmeal' is an anagram of 'SEGMENTAL'.

Can you help me to learn more?

(Other definitions for segmental that I've seen before include "As, say, Orange" , "Composed of distinct parts" .)

I've seen this clue in The Times.

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