Entry 2 senses · 2 variants Webster, 1913 activating · IPA /ˈæktəvˌeɪtɪŋ/ adj. prenom. n. 01 adj. prenom. causing motion or action or change 1. causing motion or action or change Syn. actuating(prenominal) 02 n. same as activation{1}. 1. same as activation{1}. Syn. energizing, activation