FOLIA'CEOUS, adjective [Latin foliaceus, from folium, a leaf. See Foil.] 1. Leafy; having leaves intermixed with flowers; as a foliaceous spike. foliaceous glands are those situated on leaves. 2. Consisting of leaves or thin lamins; having the form of a leaf or plate; as foliaceous spar.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI