Entry 1 sense Webster, 1913 Ultimation /(ŭl`tĭ*mā"shŭn)/ · Ul·ti·ma·tion · IPA /ˌʌltɪˈmeɪʃən/ 01 n. State of being ultimate; that which is ultimate, or final; ultimatum. 1. State of being ultimate; that which is ultimate, or final; ultimatum.[R.]