Purple of mollusca


  • Webster's Revised Unabridged Dictionary
    • Purple of mollusca (Zoöl) a coloring matter derived from certain mollusks, which dyes wool, etc., of a purple or crimson color, and is supposed to be the substance of the famous Tyrian dye. It is obtained from Ianthina, and from several species of Purpura, and Murex.
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