a. [ Cf. F. érectile. ] 1. Capable of being erected; susceptible of being erected of dilated; as, erectile tissue. [ 1913 Webster ]
2. Of or pertaining to an erection{ 5 }; as, erectile dysfunction. [ PJC ]
Erectile tissue (Anat.), a tissue, such as that contained in the penis, which is capable of being greatly dilated and made rigid by accumulation of blood in and the consequent distension of the numerous blood vessels which it contains. [ 1913 Webster ]