mes·mer·ize / ˈmezməˌrīz/ • v. [tr.] (often be mesmerized) hold the attention of (someone) to the exclusion of all else or so as to transfix them: she was mesmerized by the blue eyes that stared so intently into her own | [as adj.] (mesmerizing) a mesmerizing stare. ∎ archaic hypnotize (someone).DERIVATIVES: mes·mer·i·za·tion / ˌmezmərəˈzāshən/ n.mes·mer·iz·er n.mes·mer·iz·ing·ly adv.