ppl. a. (UN-1 8, 5 b.)
1676. H. More, Remarks, 153. It will be hard then to find any evasion if the inward Vessel ascend not as it does when the bottom is unperforated.
1726. Monro, Anat., 113. The posterior unperforated Part of the Lamella.
1833. J. Holland, Manuf. Metal, II. 196. An unperforated iron plate.
1884. Bower & Scott, De Barys Phaner., 328. Very oblique, fibrously thickened (unperforated ?) end-surfaces.