Crossword Genius

Green prefix (3)

Ross

I believe the answer is:

eco

'green prefix' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for eco that I've seen before include "Umberto --, Italian writer" , "Green prefix" , "Umberto - - , novelist" , "Environmental group" , "Umberto -, Italian author (The Name of the Rose)" .)

I've seen this clue in the Penny Press, the King Feature Syndicate, The New York Times, The Wall Street Journal, the Newsday, the LA Times, the Universal and the USA Today.
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