Crossword Genius

Water-based paint (8)

Ross

I believe the answer is:

emulsion

(Other definitions for emulsion that I've seen before include "Mixture of insoluble liquids" , "Type of paint" , "Mixture involving two liquids which do not readily combine" , "Wall paint" .)

I've seen this clue in the L.A. Times Daily, The Daily Mail, The Guardian, the Newsday.com and The Mirror.
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