Isaac of sci-fi (6)

I believe the answer is:

asimov

'isaac of sci-fi' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for asimov that I've seen before include "novelist" , "Isaac ---, SF author" , "Isaac --, sci-fi author" , "Isaac --, science fiction author" , "See 22 Down" .)

I've seen this clue in the King Feature Syndicate.

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