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. [ 1913 Webster ]
2. (Min.) Consisting of leaves or thin laminæ; having the form of a leaf or plate; as, foliaceous spar. [ 1913 Webster ]
3. (Zool.) Leaflike in form or mode of growth; as, a foliaceous coral. [ 1913 Webster ]