a. (Bot.) Connate or coalescent at the base so as to produce a broad foliaceous body through the center of which the stem passes; -- applied to leaves, as the leaves of the boneset. [ 1913 Webster ]

a. [ Pref. per- + L. folium leaf. ] 1. (Bot.) Having the basal part produced around the stem; -- said of leaves which the stem apparently passes directory through. [ 1913 Webster ]

2. (Zool.) Surrounded by a circle of hairs, or projections of any kind. [ 1913 Webster ]