Source : Webster's Revised Unabridged Dictionary (1913)

Amylaceous \Am`y*la"ceous\, a. [L. amylum starch, Gr. ?. See
   {Amidin}.]
   Pertaining to starch; of the nature of starch; starchy.

Source : WordNet®

amylaceous
     adj : resembling starch [syn: {starchlike}, {amyloid}, {amyloidal},
            {farinaceous}]