a. [ L. planarius level. See Plane, a. ] Of or pertaining to a plane. [ R. ] [ 1913 Webster ]
a. [ LL. plenarius, fr. L. plenus full. See Plenty. ] Full; entire; complete; absolute;
A treatise on a subject should be plenary or full. I. Watts. [ 1913 Webster ]
Plenary indulgence (R. C. Ch.),
Plenary inspiration. (Theol.)
n. (Law) Decisive procedure. [ Obs. ] [ 1913 Webster ]