Crossword Genius

Clots throb, I am shortly indisposed (7)

Ross

I believe the answer is:

thrombi

'clots' is the definition.
(thrombus is a kind of clot)

'throb i am shortly indisposed' is the wordplay.
'shortly' means to remove the first letter.
'indisposed' indicates anagramming the letters.
'am' with its first letter removed is 'm'.
'throb'+'i'+'m'='throbim'
'throbim' with letters rearranged gives 'THROMBI'.

(Another definition for thrombi that I've seen is " Blood clots".)

I've seen this clue in The Telegraph.
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