Entry 1 sense Webster, 1913 Abasia /(ȧ*bā"zhĭ*ȧ; -zĭ*ȧ)/ · A·ba·si·a · IPA /əˈbeɪ.ʒə/ 01 n. Inability to coordinate muscular actions properly in walking. 1. Inability to coordinate muscular actions properly in walking.(Med.) [archaic]