Entry 1 sense Webster, 1913 Ideological /īdˌ-ē-əl-äj'-ĭk-əl/ · I·de·o·log·ic·al · IPA /ˌaɪ.di.əˈlɑ.d͡ʒɪ.kəl/ 01 a. Of or pertaining to ideology. 1. Of or pertaining to ideology.