Crossword Genius

Origin of a defect (4,5)

Ross

I believe the answer is:

root cause

'origin of a defect' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for root cause that I've seen before include "Fundamental reason" , "The origin of a problem" .)

I've seen this clue in the Newsday.
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