"Star Trek Into Darkness” villain (4)

I believe the answer is:

khan

(Other definitions for khan that I've seen before include "Title taken by ancient Mongol emperors, such as Genghis" , "Title given in parts of Asia to important people" , "Imran --, cricketer" , "Asian ruler (descendant of Genghis?)" , "Title of central Asian rulers" .)

I've seen this clue in The Wall Street Journal.

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