Entry 1 sense Webster, 1913 Mystagogic · Mys·ta·gog·ic · IPA /mɪstəˈɡɒdʒɪk/ 01 a. Of or pertaining to interpretation of mysteries or to mystagogue; of the nature of mystagogy. 1. Of or pertaining to interpretation of mysteries or to mystagogue; of the nature of mystagogy.