Crossword Genius

Sci-fi author Asimov (5)

Ross

I believe the answer is:

isaac

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

This is the entire clue.

(Other definitions for isaac that I've seen before include "Newton's first name" , "Biblical patriarch" , "- Newton, Eng. physicist and mathematician" , "Sacrificial offering" , "Youth almost sacrificed" .)

I've seen this clue in The New York Times.
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