Entry 1 sense Webster, 1913 Retaliatory /rēt-ăl'-yət-ôrˌ-ē/ · Re·tal·i·a·to·ry · IPA /ɹɪˈtælɪət(ə)ɹɪ/ 01 a. Tending to, or involving, retaliation; retaliative; as retaliatory measures. 1. Tending to, or involving, retaliation; retaliative; as retaliatory measures.