Industrial giant (4)

I believe the answer is:

czar

'industrial giant' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for czar that I've seen before include "Russian ruler (alt. but not rare spelling)" , "person of great power" , "Russian emperor" , "policy coordinator" , "Pre-1917 Russian ruler" .)

I've seen this clue in the Newsday.com and the Newsday.

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