Source : Webster's Revised Unabridged Dictionary (1913)

Foliaceous \Fo`li*a"ceous\, a. [L. foliaceus, fr. folium leaf.]
   1. (Bot.) Belonging to, or having the texture or nature of, a
      leaf; having leaves intermixed with flowers; as, a
      foliaceous spike.

   2. (Min.) Consisting of leaves or thin lamin[ae]; having the
      form of a leaf or plate; as, foliaceous spar.

   3. (Zo["o]l.) Leaflike in form or mode of growth; as, a
      foliaceous coral.

Source : WordNet®

foliaceous
     adj 1: of or pertaining to or resembling the leaf of a plant
     2: bearing numerous leaves [syn: {foliose}, {foliaged}]
     3: (especially of metamorphic rock) having thin leaflike layers
        or strata [syn: {foliate}, {foliated}]