Crossword Genius

Colourant (3)

Ross

I believe the answer is:

dye

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colourant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for dye that I've seen before include "Colour by dipping in liquid" , "Colorant" , "Tint" , "Colourant" , "Staining material" .)

I've seen this clue in the Canadiana, The Times, The Independent and The Telegraph.
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