synodicalPronunciation: /sɪˈnɒdɪk(ə)l/Definition of synodical adjective 1 Christian Church relating to or constituted as a synod:synodical government 2 Astronomyanother term for synodic.Derivatives synodalPronunciation: /ˈsɪnəd(ə)l/ adjective synodical (sense 1).synodical in other Oxford dictionaries Definition of synodical in the US English dictionary