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 laminæ; having the form of a leaf or plate; as, foliaceous spar.

3. (Zoöl.) Leaflike in form or mode of growth; as, a foliaceous coral.