Entry 1 sense Webster, 1913 Premeditation /prēm-ĕdˌ-ət-āsh'-ən/ · Pre·med·i·ta·tion · IPA /priːmˌɛdətˈeɪʃən/ 01 n. The act of meditating or contriving beforehand; previous deliberation; forethought. 1. The act of meditating or contriving beforehand; previous deliberation; forethought.