that portion of the surface of a denture that has its contour determined by the impression; it includes the borders of the denture and extends to the polished surface.
den·ture im·pres·sion sur·face
(denchŭr im-preshŭn sŭrfăs) Portion of denture surface that has its contour determined by the impression; includes denture borders and extends to polished surface.