Entry 1 sense Webster, 1913 Reminiscential /(-n?s-s?n"shal)/ · Rem·i·nis·cen·tial · IPA /ˌɹɛmɪnɪˈsɛnʃ(ə)l/ 01 a. Of or pertaining to reminiscence, or remembrance. 1. Of or pertaining to reminiscence, or remembrance.