mollusca : Idioms & Phrases


phylum mollusca

  • noun gastropods; bivalves; cephalopods; chitons
    Mollusca.
WordNet

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.
Webster 1913