1. [n]  (pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissue
2. [n]  a nonnitrogenous food substance consisting chiefly of starch; any substance resembling starch
3. [adj]  resembling starch

AMYLOID is a 7 letter word that starts with A.

1. \Am"y*loid\, Amyloidal \Am`y*loid"al\, a. [L. amylum
   starch + -oid.]
   Resembling or containing amyl; starchlike.
   {Amyloid degeneration} (Med.), a diseased condition of
      various organs of the body, produced by the deposit of an
      albuminous substance, giving a blue color with iodine and
      sulphuric acid; -- called also {waxy or lardaceous
      degeneration}.
   

2. \Am"y*loid\ ([a^]m"[y^]*loid), n.
   1. A non-nitrogenous starchy food; a starchlike substance.
   2. (Med.) The substance deposited in the organs in amyloid
      degeneration.