Definitions for "Unifacial"
Having but one front surface; as, some foliaceous corals are unifacial, the polyp mouths being confined to one surface.
having but one principal or specialized surface; "a primitive unifacial flint tool"
having one "face", i.e. a cambium that produces cells only on one side; a unifacial vascular cambium that produces only secondary xylem is found in some fossil non-seed plants; compare to bifacial vascular cambium and vascular cambium;