Entry 1 sense Webster, 1913 Capitalization /kăpˌ-ĭt-əl-ĭz-āsh'-ən/ · Cap·i·tal·i·za·tion · IPA /ˌkæpɪtəlaɪˈzeɪʃən/ 01 n. The act or process of capitalizing. 1. The act or process of capitalizing.