carminic acid

from The Collaborative International Dictionary of English v.0.48

Carmine \Car"mine\, n. [F. carmin (cf. Sp. carmin, It.
   carminio), contr. from LL. carmesinus purple color. See
   {Crimson}.]
   1. A rich red or crimson color with a shade of purple.
      [1913 Webster]

   2. A beautiful pigment, or a lake, of this color, prepared
      from cochineal, and used in miniature painting.
      [1913 Webster]

   3. (Chem.) The essential coloring principle of cochineal,
      extracted as a purple-red amorphous mass. It is a
      glucoside and possesses acid properties; -- hence called
      also {carminic acid}.
      [1913 Webster]

   {Carmine red} (Chem.), a coloring matter obtained from
      carmine as a purple-red substance, and probably allied to
      the phthale["i]ns.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Carminic \Car*min"ic\, a.
   Of or pertaining to, or derived from, carmine.
   [1913 Webster]

   {Carminic acid}. Same as {Carmine}, 3.
      [1913 Webster]