Entry 1 sense Webster, 1913 Intensification /ĭn-tĕnˌ-səf-ək-āsh'-ən/ · In·ten·si·fi·ca·tion · IPA /ɪntˌɛnsəfəkˈeɪʃən/ 01 n. The act or process of intensifying, or of making more intense. 1. The act or process of intensifying, or of making more intense.