MARIOLOGY

Mariology is the branch of theology that studies the life and prerogatives of the Blessed Virgin, and her place in the economy of salvation and sanctification. (Etym. Greek Mariā, Mary + logia, science, knowledge.) -Fr. John Hardon's Modern Catholic Dictionary

[Mariology] is the body of belief, doctrine, and opinion concerning the Virgin Mary, the study of the person and nature of the Virgin Mary, esp. in reference to her [collaborative] role in the incarnation of of God in Christ [and her moral participation in the divine plan of salvation].
- Collins American Dictionary

Mariology is the theological study of Mary, the mother of Jesus. Mariology seeks to relate doctrine or dogma about Mary to other doctrines of the faith, such as those concerning Jesus and notions about redemption, intercession and grace.  -Wikipedia