Entry 1 sense Webster, 1913 Supervision /so͞opˌ-ẽrv-ĭzh'-ən/ · Su·per·vi·sion · IPA /ˌsupɚˈvɪʒən/ 01 n. The act of overseeing; inspection; superintendence; oversight. 1. The act of overseeing; inspection; superintendence; oversight.