Crossword Genius

Fermi's field (7)

Ross

I believe the answer is:

physics

'fermi's field' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for physics that I've seen before include "One of the sciences" , "natural science" , "School science subject" , "Purges" , "Branch of science" .)

I've seen this clue in the Universal, the Newsday, the USA Today and the Newsday.com.
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