or sul·fide dye
[ suhl-fer dahy or suhl-fahyd dahy, ‐fid ]
/ ˈsʌl fər ˌdaɪ or ˈsʌl faɪd ˌdaɪ, ‐fɪd /
any of the class of dyes produced by heating an organic compound, as an indophenol, with sulfur or sodium polysulfide, used chiefly in dyeing cotton.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019