Badly presented medical lecture (7)

I believe the answer is:

declaim

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

'lecture' is the definition.
(I've seen this before)

'badly presented medical' is the wordplay.
'medical' can be anagrammed to 'DECLAIM'.
Though, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for declaim that I've seen before include "Deliver an impassioned speech" , "Speak boldly" , "Spout" , "Rail against" , "Deliver (words) impressively" .)

I've seen this clue in The Globe and Mail.

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