The Collaborative International Dictionary of English v.0.48:

Lardacein \Lar`da*ce"in\, n. [See Lardaceous.] (Physiol.
   Chem.)
   A peculiar amyloid substance, colored blue by iodine and
   sulphuric acid, occurring mainly as an abnormal infiltration
   into the spleen, liver, etc.
   [1913 Webster]