Crossword Genius

Earth-friendly prefix (3)

Ross

I believe the answer is:

eco

'earth-friendly prefix' 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 "Concerned with the environment" , "Umberto -, Italian author (The Name of the Rose)" , "Environmental group" , "Umberto - - , novelist" , "Green prefix" .)

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