Crossword Genius

Prefix with footprint (3)

Ross

I believe the answer is:

eco

'prefix with footprint' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for eco that I've seen before include "Umberto --, Italian writer" , "Umberto - - , novelist" , "Green prefix" , "Environmental group" , "Concerned with the environment" .)

I've seen this clue in the L.A. Times Daily and the LA Times.
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