The Collaborative International Dictionary of English v.0.48:

amyloidosis \am`y*loi*do"sis\ ([a^]m`[i^]*loi*d[=o]"s[i^]s), n.
   (Med.)
   A disorder characterized by deposit of extracellular
   amyloid[2] in organs or tissues in an amount that interferes
   with normal function of the affected organ; it is often
   secondary to chronic rheumatoid arthritis or tuberculosis or
   multiple myeloma. Called also amyloid degeneration waxy
   degeneration and lardaceous degeneration.
   [WordNet 1.5 + AS]

The Collaborative International Dictionary of English v.0.48:

amyloid \am"y*loid\ ([a^]m"[i^]*loid), n.
   1. A starchlike substance.
      [1913 Webster + AS]

   2. (Med.) Any of a group of diverse starchlike glycoproteins
      deposited in the organs under some pathological
      conditions, such as amyloidosis; they are composed of
      linear nonbranching fibrils when viewed under the electron
      microscope. --Stedman 25
      [1913 Webster + AS]

   Amyloid degeneration (Med.), Same as amyloidosis; --
      called also waxy degeneration or lardaceous
      degeneration.
      [1913 Webster + AS]