a. [ Pref. bi- + fold. ] Twofold; double; of two kinds, degrees, etc. Shak. [ 1913 Webster ]
a. [ Pref. bi- + foliate. ] (Bot.) Having two leaves; two-leaved. [ 1913 Webster ]
a. [ Pref. bi- + foliolate. ] (Bot.) Having two leaflets, as some compound leaves. [ 1913 Webster ]