Entry 1 sense Webster, 1913 Mummification /mŭmˌ-ĭf-ĭk-āsh'-ən/ · Mum·mi·fi·ca·tion · IPA /ˌmʌmɪfɪˈkeɪʃən/ 01 n. The act of making a mummy. 1. The act of making a mummy.