Entry 1 sense Webster, 1913 Visibility /vĭzˌ-əb-ĭl'-ĭt-ē/ · Vis·i·bil·i·ty · IPA /ˌvɪz.əˈbɪl.ɪ.ti/ 01 n. The quality or state of being visible. 1. The quality or state of being visible.