Medical rig sorted out killing bugs (10)

I believe the answer is:

germicidal

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'killing bugs' is the definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I don't see?

'medical rig sorted' is the wordplay.
'sorted' indicates anagramming the letters.
'medical'+'rig'='medicalrig'
'medicalrig' with letters rearranged gives 'GERMICIDAL'.

'out' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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