Inventor Thomas who co-founded General Electric (6)

I believe the answer is:

edison

(Other definitions for edison that I've seen before include "US inventor of over 1,000 devices" , "Science master" , "US inventor of phonograph, electric light etc." , "Thomas Alva -, US inventor" , "Inventor with over 1,000 US patents to his name, d. 1931" .)

I've seen this clue in the LA Times.

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